This is the way some people control everything around them. They try to discredit others in order to make themselves credible. It's a dangerous game to call what is true false.
The idea that a prophecy has to be known information, or 'confirmation' is not taught in scripture, runs contrary to so much of the Biblical narrative it makes no sense at all to hold to it. I think it was an idea developed as a reactionary quasi-doctrine during some periods in the early Pentecostal movement by pastors who had to deal with the problem of false prophecy. But the problem is, a lot of genuine prophecy doesn't conform to this man-made doctrine.
If you have received or been around other people receiving very detailed prophecies, some of them may be very clearly what you know about the details of your own life, your own calling, etc. I had a strong urge to go to Indonesia back when I was a young man in my 20's. I though it might be God directly me there, but at the time I would not have said I 'heard God.' I went to English services at first. One man at one meeting in Jakarta prophesied over me that God had brought me to Indonesia, and various other things. I went to this town outside of Jakarta, to a different meeting, and a man there prophesied, I think the exact same words for the first part of it, that God had brought me to Indonesia to make me a minister of the Gospel. I hadn't heard God tell me He brought me to Indonesia to make me a minister of the Gospel, but I had considered my own gifts and was starting to have an interest in teaching the Bible. Indonesia was where I first started teaching Bible studies, preaching in churches, etc. Was all of it confirmation? Most of it. Bits and pieces were not.
I know a man who was working for a big retail company. He had a nice job with good benefits. He went to a church and a preacher prophesied over him about how he would make music. So he bought equipment, got his first gig mixing music, and then he quit his job and went full-time mixing and mastering music. A lot of praise music has come out of his little home studio. Some of his music even got Dove awards. I asked him if he felt like he'd felt like God wanted him to make music before that prophecy. He said no. Would you want to tell the one who spoke this prophecy that he had prophesied falsely in the name of the Lord?
The problem with made-up doctrines is they can confuse people, and maybe even lead them to reject the working of God, and the grace of God working through other people. We aren't allowed to put our own restrictions on the Holy Spirit in our teaching.
The OT has more to say about false words than the new and God hates people putting words in His mouth or controlling others through those same words.
I suspect God hates that, but I cannot think of where the Bible specifically says God hates it, and I wouldn't want to attribute a feeling to God He hasn't said He has.... along the same lines of not wanting to put words in God's mouth. I Corinthians 15 indicates bearing false witness of God is a bad thing, and false prophesying would be a subset of that. I find preachers guessing what God might think and state it as fact to be quite irksome as well. Prophesying falsely in the name of the LORD had a death penalty in the Old Testament.
I wonder if you had some bad experiences with someone using false prophecy to control others. I don't know if I have seen that. I think a lot of the false prophecy comes form people trying to prophesy and saying whatever stuff pops into their head. Some churches was people to prophesy so bad and tell them 'missing it' is no big deal. IMO, that is very dangerous.
The reason God sent prophets in the first place, was because the Israelites did not want to hear form God personally. They told Moses to speak to them on behalf of God.
The Spirit still gifted members of the body of Christ with the gift of prophecy, and 'prophets' is among the gifts of Christ in Ephesians 4. Christ said He would send prophets, wise men, and scribes.
If you think God should have just done away with prophets under the New Covenant... that's not the direction He went with it.
But what happens? False people creep in, calling themselves prophets and speak lies and deception and the people turn even further away from God!
As far as my own experience goes, church experience, with prophesying, hearing prophecies in church, hearing receiving, etc. personal prophecies for myself and others, I'd say the vast majority of it has been rather positive, with a few bad experiences along the way. I can't vouch for online or TV ministers.
There is nothing in scripture to indicate we are to run around looking for a word from God.
It is not forbidden either. In the Old Testament, it was clearly allowed. Deuteronomy 18 forbids going to soothsays, necromancers, etc., and specifically allows prophets of the Lord. Apparently inquiring through Urim and Thummin was allowed. Joshua and the apostles cast lots.
The New Testament does not forbid asking a prophet if he receives a word from the Lord, but doesn't give any examples of it, either. We should not treat it as a sin. Sometimes immature believers who find out about prophecy want to run here and there looking for a word. They might settle down a bit if they get a false one and it causes them some trouble... and try to screen a bit who they listen to and seek input from other members of the body of Christ on it.
Your attitude toward prophecy seems a lot more negative than Paul's in I Corinthians. Paul protected and nurtured zeal for spiritual gifts in I Corinthians 14. He was careful not to squash their zeal for speaking in tongues as he taught about the need for interpretation. But he greatly encouraged prophesying. He was speaking of a revelatory gift, as we see with the wording in the passage, 'if any thing be revealed to one that sitteth by....'
Asking someone if they have a prophetic word is nowhere described as sin in scripture. It's also possible that someone knows from the Spirit that someone else will receive a prophetic word. I've perceived that someone was supposed to prophesy over someone else.
Understand that the reason these prophets existed in the first place, was because people wanted someone other than God to speak to them.
But Christ sent prophets in the New Testament era and gave prophets, instead of just doing away with prophets altogether based on some egalitarian ideal.
Are we going to be like that too? Apparently, we can now approach the very throne of our Creator without fear as believers in His Son. What kind of person gives that up in favor of someone, who is just like them and does not know God any better than any opportunity they have themself for the same.
Why would someone have to give up the ability to approach the throne of God spoken of in the book of Hebrews, to benefit from the prophetic ministry spoken of by Christ in the Gospels, by Luke in Acts, and by Paul in the epistles? There is no need to choose between the two.
American culture (Anglo culture in general and some other western cultures) tends to be very individualistic. I Corinthians 12 shows us that in the body of Christ, there are numerous spiritual gifts and we are supposed to minister to one another. Collectively, we are the body of Christ--- not one individual. We are the church not, "I am the church." As an individual, you are not the bride of Christ. The church is the bride of Christ.