AJ flop TP vs raise (2 similar hands)

1# Correct on every street. Would've play the same way like you. Well played!

2# Seems fine. On the river is kind of borderline. You should fold with some frequency. Depends on V. But i will have hard time folding as well versus such a weak bets.

The first hand to the river I'm not sure I have a call, because it has to be pretty aggro to bet when there is a straight to a card.
True you block color combos like JTs-JKs; but at these levels they do not make fine bets. I don't think I see a worse Ax enough times and I do value some doubles, AQ, set or flush.

AhQh,AcQc,AhJh,AcJc,AhTh,AcTc,Ah6h,Ac6c,Ah3h,Ac3c,AhQc,AhQd,AhQs,AcQh,AcQd,AcQs,AhJc,AhJd,AcJh,AcJd,Ts9s,9s8s,8s7s,6c6h,6s6h, 6s6c,3c3h,3d3h,3d3c
Against this range we have 6% equity
But basically I wouldn't pay for the level meta.

Second hand:

On the river we have a fold, we only beat QT if he plays it that way.
And although he may be a weak opponent for having a low stack, they don't usually play a worse Ax that way.
From how they play at the level, I would think that we will see AQ+ more times or better.
It is a very dry board to include in your range busted draws

Is it really a good idea to bet AJ on the flop? For example, in the first hand, CO can have better aces in his range:

AK, AQ, A6s, A3s beat you
AJ is a split
And you "only" beat ATs, A9s, A8s, A7s, A5s, A4s, A2s

You are actually behind a range of A2s+,AJo+ (assuming he doesn't 4bet AK preflop), and you have only 48.40% equity against that range. And if villains are tight players, they might not have that many worse aces in their range.

Flush draws will not fold to this bet, and you probably crush the rest of his range. So I'm not sure if that bet accomplishes a lot.

does the population bluff raise on A high boards? does the population bluff raise enough overall?

if not, you can consider folding right away.