Tbh, they have. But they think bullying "ret*rded" people is funny.
Or they're following and they don't know what they're doing.
Or they're just bad at humor.
Or they have really good reason but really bad intentions.
Or they have reason but are reasonable enough to behave like a normal human being, so they don't bully, but doesn't support the furry community (funny enough those are often the ones who take the fallback from the antis bullying).