I think flop jam is fine, as played on the river I think I may be able to find a hero fold, but tbh idk if that is correct.  It's a line that is literally flopped sets and AA, and then 3-barrells.  When someone 3-barrells, I find it super interesting.  If they are not that good, then their range is weighted towards bluffs because they are not 3-barreling light enough with hands like TPTK etc.. that their range becomes nuts/bluffs and the combos of bluffs always outweigh the nut or super super strong hand combos.  For example, on this board when the high-card on the flop hits the river he me shut down with AA, AK, and so on, because he isn't capable of extracting thin value like that.  If that's how you would describe this player, then I would lean towards call on the river, b/c his hands are weighted towards bluffs.  If you think he is capable of extracting somewhat thin value here with AA and AK then I would lean towards fold.  I would just jam flop though, you are never dead, and have solid equity against the top of his range, straights, sets etc.  Just my two cents.