It is difficult to agree with your perspective on this story. I do agree with you that Job does learn (and grow) as a result of enduring his ordeal. That seems very clear no matter what. However, the other extrapolations don't really seem to work.
1. First of all, the main conflict of the story is between God and satan, not God and Job. Satan has challenged God's relationship with His creation, and in the end satan is proven wrong because Job does not break faith and curse God as satan claimed he would. God uses Job to prove that God's relationship with His creation is relational, not transactional.
2. You speculate that Job may have been thinking of himself as perfect and upright, but where does it say anything like this in the story? It's complete conjecture. Also, if Job is full of pride, then that would be sin, right? But you already stated you agreed with verse 8 where God calls Job blameless. So which is it? These ideas in your post are contradictory.
3. You state it is clear God is dealing with Job's pride. How is that clear? Did you notice that Job is repeatedly calling out to God, seeking Him, and deeply desires to have his relationship with God restored all throughout the story? Job is coming through all of the details of his life trying to see what he got wrong and how he can be in fellowship with God again. He actively asks God to show him his sin. Does that sound like a proud person to you?
4. Have you read the book of James in the NT? The assessment of Job by James in verse 5:11 is about Job's endurance and perseverance. His assessment is not about Job learning his lesson due to his pride. Have you ever considered this assessment by James?
5. Can you respond to these two verses? In Job 2:3 God tells satan, "...thou movedst Me against him, to destroy him without cause." In Job 42:11 it says, "...and they bemoaned him, and comforted him over all the evil that the LORD had brought upon him". What do you say to these two verses?
1. First of all, the main conflict of the story is between God and satan, not God and Job. Satan has challenged God's relationship with His creation, and in the end satan is proven wrong because Job does not break faith and curse God as satan claimed he would. God uses Job to prove that God's relationship with His creation is relational, not transactional.
2. You speculate that Job may have been thinking of himself as perfect and upright, but where does it say anything like this in the story? It's complete conjecture. Also, if Job is full of pride, then that would be sin, right? But you already stated you agreed with verse 8 where God calls Job blameless. So which is it? These ideas in your post are contradictory.
3. You state it is clear God is dealing with Job's pride. How is that clear? Did you notice that Job is repeatedly calling out to God, seeking Him, and deeply desires to have his relationship with God restored all throughout the story? Job is coming through all of the details of his life trying to see what he got wrong and how he can be in fellowship with God again. He actively asks God to show him his sin. Does that sound like a proud person to you?
4. Have you read the book of James in the NT? The assessment of Job by James in verse 5:11 is about Job's endurance and perseverance. His assessment is not about Job learning his lesson due to his pride. Have you ever considered this assessment by James?
5. Can you respond to these two verses? In Job 2:3 God tells satan, "...thou movedst Me against him, to destroy him without cause." In Job 42:11 it says, "...and they bemoaned him, and comforted him over all the evil that the LORD had brought upon him". What do you say to these two verses?
Second, I was reading these verses in Luke 18:11 The Pharisee stood and prayed thus with himself, God, I thank thee, that I am not as other men are, extortioners, unjust, adulterers, or even as this publican. 12 I fast twice in the week, I give tithes of all that I possess.
And it hit me, Jesus does not dispute the truth of this. Apparently God hears people praying this way to him or at the very least thinking these thoughts since God knows the heart.
So then I thought suppose Job thought the following:
there is none like me in the earth, a perfect and an upright man, one that feareth God, and escheweth evil?
That may seem like conjecture, but based on Luke 18 there are people who think this way, and many of them are very likely Christians. After all it is implied in the phrase "Make America Great Again".
Third, it has always bothered me that the teaching on this is that Job was righteous but God just decided to "test" him. A euphemism for having his family killed, his business destroyed, and him diseased. That portrayal of God is contrary to all that I know from the Bible. God is righteous, He is a covenant God. In that covenant it includes God delivering us from evil, not delivering us to evil. However, if Luke 18:11 applies to Job then the Lord has explained. We are justified by faith, not by works. Job thought he was justified by all that he was and the Lord tells us in Luke 18 that this pharisee did not go from this prayer justified. That would explain God removing the hedge of protection.
Fourth, the second thing that has always bothered me about typical expositions on Job is what was the point? Where was the correction? The book clearly lets you know that Job was corrected by God, and once he was corrected then the blessing returned. If you read what God tells Job He is telling him that he is not God, he can't do anything without God, and he does not understand how God has built the earth and by extension how He builds a man.
Fifth, then this also reconciles the issue with righteousness. Is God righteous for putting the spotlight onto Job and directing Satan to take a closer look at him, and even allowing all the harm that came to him to come to him? If God is simply agreeing with Job, if it were Job that had thought there was no one like him, that he eschews evil, and he is upright and perfect. In that case Job cannot complain if God agrees with him. If Job is boasting to God in his prayers then surely God can also boast to Satan about Job.
Most of the typical exposition on Job that I am familiar with portrays a capricious God and portrays Job as simply a pawn for God and Satan to toy with.
In Job 40 we hear "wilt thou condemn me, that thou mayest be righteous?". That is a good description of typical exposition on Job. If Job is righteous then by extension you can condemn God. They don't use that word, they use "trial" and "testing" etc. But ultimately it is God who is guilty and Job is righteous.
In chapter 41 God spends the entire chapter telling Job about Leviathan. Why? I never heard anyone explain it and yet it is crystal clear, "he is a king over all the children of pride." That is the conclusion, God tells us that. What is the point if he isn't warning Job about pride and if the book is not simply an example of how Leviathan is the king over all the children of pride. That tells me that children of pride are no longer under the reign of Jesus but under the reign of Satan. Not that different than Peter telling us to be humbled under the mighty hand of God.
Then in chapter 42 Job says "I know that thou canst do every thing, and that no thought can be withholden from thee." Isn't that weird? How is it that Job knows that God knows all our thoughts? There is nothing in the book of Job talking about Job reading our thoughts unless it is in chapter 1 that Job was the one thinking proud thoughts and God simply repeated them to Satan. But Job continues "therefore have I uttered that I understood not". When? God commends Job for what he said to his friends. In fact it continues with God saying "My wrath is kindled against thee, and against thy two friends: for ye have not spoken of me the thing that is right, as my servant Job hath." Clearly Job spoke the thing that is right to the friends, so what is he referring to about having uttered that I understood not? Once again, I think this refers to the boastful thoughts and prayers.
I don't think it is fair to call this conjecture. On the contrary I think it is consistent with the whole Bible and there is plenty in Job to lead one to this interpretation.