It takes guts to put yourself out there, especially on stream. You are all good people to help him through it, and you all sound like good friends anyone would be fortunate to have. To your friend who was harassed, keep doing what you're doing, and don't let anyone tear you down. It's been my experience that people who bully others do so because they are envious, hurting, powerless, or feeling inadequate. Once you understand this, nothing they say can hurt you. Stay strong, keep playing, and have fun.