I don’t really think people should be banned for it unless it’s something awful they are doing, like using their community to spread hate and banning people who criticize or try to stop them. However I don’t think the fear of getting them banned should stand in the way of reporting their wrongful behavior to the admins. They need to know about this, and if they choose to ban the guy, that’s their decision. The best thing is that they deal with the problem and stop it from continuing to happen.