It is clear that Hero has a massive villain read that wasn't shared in the thread. That is a handy thing to have, but it complicates strategy discussions.
I am at a loss to explain how a villain that is 100% sure to jam all-in on the river with a hand that beats Hero's hand is going to fold his better hand to a half-pot turn raise by hero.
This relies on reads/information that was unavailable when making my analysis. I made my analysis against the standard 1/2 player pool.
If the argument is "villain is pot committed by his turn bet" (which by the way is an excellent reason to fold the turn.), then that line of thinking works both ways. The villain is always betting the river with a better hand and he is also always going to call a turn bluff by hero getting just under 3-1 pot odds to call.
At 1/2 plenty of villains will fold to a raise on the turn even if they would jam river. So I disagree there. I said the top decision would be to fold turn so we don't disagree there if that's what you think.
Perhaps Hero knows villain is a "glass cannon", powerful when being the aggressor but turns into a chicken when facing aggression. There are players like that - - - it is a very useful thing to know about a player.
In my experience plenty of 1/2 villains 3 barrel donk with just an ace here, but reconsider their action when facing a raise on flop or turn. If you disagree fair enough.
Do we actually know villain's holding? Best I can tell, we don't. I have to wonder if Hero's hand was good all along given villain's decision to fold the turn.
As told I think villain folded a better hand seeing how he was mad when hero shows the 9h.