You are obviously referring to me, so I will respond. You can not deny that many people who are not saved, but live morally, show more of the fruits of repentance then what you demand from those that profess Christ. God told Jeremiah that the heart was deceitful and desperately wicked above all things and who could know it (Jer 17:9). We also know that man looks on the outward appearance but God looks upon the heart (1Sam 16:7). We also know from the scriptures that Paul and other of the apostles repeatedly told believers in the many churches to put away all kinds of sins concerning the flesh and also of the mind and tongue (Eph 2;3, 4:22,31, Rom 13:12, Col 3:8,9, Jm 3:5-8).
When I see a person who professes Christ and has a problem with sin, I don't get upset nor do I judge them concerning God's grace and their salvation status. Maybe you do but I do not. If anything, grace swells up in me and I want to give them more grace because they need it more. If you don't understand that, then I can't help you understand.
You keep harping on this example (10 yrs) with all these terrible things that a man has done, but can any of these terrible things compare to what David did when committing adultery with Bathsheba, getting her pregnant, having her husband Uriah killed in battle then taking Bathsheba and multiplying wives which kings were not to do (Deut 17:17)? On top of that he didn't even know he did anything wrong until God had Nathan, the prophet, discreetly bring it to his attention (2Sam 12:1-10). Are you going to tell me that David repented and was chastised for his sin? You bet, because he was king and God put away his sin before he even repented (2Sam 12:13).
But you say, this man of (10 yrs) has NO fruit to show for repentance. SO WHAT! Does that give any the right to judge this man because of his sin or lack of the 'moral fruit' that you are looking for? Would you have judged Sampson in the same manner, who was a judge of Israel, who had a problem with prostitutes (Judges 16:1) or having sex with women who he was not married to? Why did God ever choose a man like Saul (Paul), who persecuted the church and had many of them killed as a murderer, breaking the law of the 10 commandments and justifying it in the name of God's righteousness upon those that blasphemed. Was it a good choice in choosing Peter to be the first preacher at Pentecost, who was nothing but an impulsive, double-minded, unconverted wishy-washy man, who had a problem with envy and denied Christ three times and went back fishing (Jn 13:38, Mt 26:69-75)?
So you have murders, adulteries, fornicators, backslidders and those that denied Christ, all committing these horrendous acts after God had called them, but God still used them and never judged them. How would you have judged them? These men get to remain in their calling despite their sin and God rents the kingdom from Saul because he disobeyed the voice of God (1Sam 28:17,18). GO FIGURE! It may be that God chooses the foolish to confound the wise, the weak to confound the mighty, the despised and the base thing to render all those things that we put value upon as nothing (1Cor 1:27,28). Perhaps the man (of 10 yrs) that you describe is the one that God is going to choose and has used all these things, that you despise in this man, to call him in His own righteousness and use him for the glory of God.