What's the shittiest anime/manga fanbase you've ever personally been in or have encountered?

SnK schizos. At least most other fanbases actually love what they obsess over, but there's nothing Titantards vehemently HATE more than Attack on Titan and instead they actively fabricate dumb headcannons to live out their schizophrenic fantasies.

One piss. Literally cannot take any criticism of their series without chimping out

One Shit, easily.

Chainsoy jak fans

Self-proclaimed "weebs." The ones that call themselves that and exclusively watch whatever is flavor of the month.
Funnily enough this includes most fanbases mentioned ITT.

Does this board count?

Any Forums - Anime & Manga

People who identify as weeb/otaku

Dragon Ball. The answer is always Dragon Ball. The answer has always BEEN Dragon Ball.

every anime.

Kaguya Sama by far

yeah, this. Somehow a Dragonball autist makes the series their entire personality so that no matter what situation they're in, they turn it into Dragonball. So many small streamers on twitch whose chats get spammed for weeks on end because one time they played a Dragonball game on stream.