- Rule 34. They treat it like it's toxic when they sexualize other characters, so this gotta go here.
- Porn sites in general.
The first is probably covered by Toxic Fandoms and Hatedoms wiki.
The second is probably too NSFW.
They don't mention why Rule 34 art sucks. Also, can't you just put an NSFW/18+ warning on the Porn sites page?