300 more to call with like 1080 in the pot, I find a call here - these quick raises are bluffs more than strength I've found, lots of draws missed, and you expected villain to read your line as weak and call wide - so if they have air, they are more likely to bluff wide too.

Yeah, I may have found a call if I had thought longer. In the moment, it was just like - oh, river raise, they have a strong hand, I fold.

One of the downsides - but sometimes an upside - to being one of the more aggressive players at the table is that villains do find bluffs in spots where they'd never bluff some very tight TAGish player... I did play against this same guy again, found him squeezing in a spot, 3bet AJs on the button, tried a super small value/blocker bet on the river in a checked down 3bet pot with AQ high - so I do think he has the capacity to bluff in that river spot, if he felt I was likely to have air (and more polarized than I really was).