It’s a good theory. My theory is, for whatever reason, jaded, narcissistic, miserable people congregate in r/AITA and try to drag other people into their misery because that’s easier than accepting responsibility and doing something to change.

Before Reddit made hiding profiles easy you'd click on a user's unreasonably scorched earth advice to the OP, and find their post history is essentially going to every story they come across and advocating for scorched earth.