Even after being spared an indefinite prison sentence and getting away from it with his life, Henry Hill didn't learn anything. He resented the fact that all of the unearned, coerced wealth he received because of his Mob connections was gone, and that he was being placed on the same level as "schmucks" who actually earned their livings honestly.
That was a message in Coked Up Wolf Of Wall Street as well.
I agree that the movie, in the end, shows the futility of being a mobster. However, when people talk about them movie they usually talk about how Pesci’s character beat up the guy or how cool some of the dialogue is. No one ever says, “Did you see “Wiseguys”? Wasn’t it cool how the mob guys end up getting their just desserts?”