Thanks everyone for the thoughtful replies. They are appreciated.
I'm not sure if it matters, but I was not the HERO in this hand. HERO's description and reads are from them personally as they were relayed to me in many discussions.
It cannot be overstated how the amount of history between HERO and Villain plays into decision making. Because of this, they've become very aware of one another's patterns. Unconventional moves and deceptive play are critical to gaining an edge when this is the case.
Against a random, unknown opponent, a more ABC approach would make more sense.
HERO elected to flat call preflop as to not bloat the pot OOP against a player who can stack them. HERO will find them self in an awkward position if their 3-bet pre is called and they miss the flop - which will happen often if they're sharing a card (likely the ace). Flat calling closes the action and disguises the strength of their hand - and if they miss they can c/f the flop and move on to the next hand with minimal stack damage.
There's a valid argument that a 3-bet pre is appropriate since HERO is likely ahead of a significant percentage of Villain's range - however realizing their equity isn't always the primary objective at this stage of the tournament when in order to do so requires significant exposure, which was the case in this hand.
I thought the flop play was the most interesting part of the hand. A C/R on this flop basically tells the Villain that HERO probably holds AJ or better. Villain's call of the C/R makes HERO nervous - since Villain is very capable of sandbagging a big hand here.
If I were in the HERO's spot, I probably just flat call Villain's c-bet. This keeps the pot size reasonable and continues the passive line that HERO took preflop. If a player's strategy is to feign weakness, then continue telling that story.
The turn was a plot twist that pleases HERO but still makes them nervous. Trip aces with a Q kicker is probably not something HERO is going to get away from. As played, HERO needs to make a larger bet on the turn and just make the best decision they can if they're jammed on. There's also a case for check/calling though... HERO holds a really good-yet-vulnerable hand OOP and is exposed to a high degree of risk-of-ruin. If Villain checks back, at the very least HERO can probably get to showdown without going broke.
The river is unpleasant but there's always the possibility Villain holds a smaller ace and this river card doesn't change anything. Villain might have stubbornly call the flop C/R with a weaker ace, and couldn't release it on the turn given the price they were laid. The point of a blocker bet is when holding a hand that'd difficult to fold, losses are minimized when you bet an amount that's less than you'd likely be facing if you checked and your opponent bet. It also has the appearance of a 'please call me' bet, meaning if you are raised, you can fold confidently.