If they even THINK you are rainbow-haired adjacent they get really mad at you for existing.
They'll have their little anime avatar with pink and blue and green hair out there accusing you of being some anime-obsessed dumbass girl, even though your post isn't about anime at all and you don't understand any of the weeb-specific insults they are calling you.
These people honestly project so much. They'll tell you they're being dogpiled when they went out their way to pick a fight with someone and get all their friends to join in mocking them. They'll tell you they're fighting a pedophile, and then you find out they're the one who's 26 and grooming 14 year old kids on their private chat server.