Two things can be true: It's bad to bully any person, including minors. Random assholes on the internet are not responsible for anyone else's mental health, including minors. Adults are responsible for themselves and parents are responsible for minors if they have not successfully learned to take that responsibility. I'm so glad that most of my online communities are explicitly adult-only because it prevents the problem of kids (or adults) pulling the "but I'm literally a minor" card when they can't manage their own selves and want someone else to do it for them.