AIBU is full of arseholes who think they are much cleverer and funnier than they are. Loads of them are nasty aggressive trolls masquerading as regular folks and they clearly enjoy insulting people just because they can.
There's also masses of threads where the op's point is wilfully missed repeatedly.
For example "I've just had a terrible haircut, she's done the exact opposite of what I asked for, aibu to ask for your terrible haircut stories to make me feel better."
Response a) gosh op you want other people to have had terrible haircuts, how nasty.
b) why didn't you speak up during the haircut ffs???? You only have yourself to blame op.
c) take to twitter op!! Stop her butchering other peoples hair.
d) report her to trading standards op, demand your money back or a replacement haircut!!
e) sigh, get a grip op, it's only hair
f) gosh op, how passive aggressive
And so on till the end of time...