He looking at more than 15x9BB here (2x9BB on the table already and another 15x9BB ESS) so it's alright.

Is villain's stack more important for set-mining?
If villain has 20x SBR but I only have 10x am I (enough) more likely to get my double-up?
Obviously my return can't be boosted to 20x to make up for the times he folds but the chance of getting that 10x are probably better than if he has 10x and I have the 25x.

Why not 3Betting light acg? Did you miss the Btn Flatting?
I wouldn't be terribly surprised if he was squeezing with almost any Ax (small sample but substantial 3bet%).
Not sure he'd continue flop without an Ace.
No CB stat for him? If he had high CB this looks very like AA ..but at 10:1 AK, AJ and 55 are plausible enough to make it a call even if you think he wouldn't put it all out for AQ ..you might be playing against this fish :

Me: you've inflated the pot to the point of being All In with just top pair.
acg123: majority of the time this is good enough,
(we'll just quietly ignore that he was talking as the aggressor in a non-3Bet pot there )