There's been a case where a kid was arrested for saying stuff like "ya im gonna shoot up a school lmfao" on League of Legends even though he had no actual intentions.
That's different. Emo isn't going around saying that he is going to assault anyone in any manner. He is just being overly loveual on a forum meant for kids.
loveual harassment isn't criminal (like threatening to shoot up a school), it is a civil case. That is, unless he is harassing children, but he isn't ("18 or older bub").