Yeah, he wasn't banned for socially unacceptable behavior. He was banned specifically for interrupting and tarnishing the ceremony. There may even be rules that members and invitees agree to about not going up on stage unless called and not making a scene in the audience. He may've been banned for breaking specific rules like that. Generally, organizations and businesses are likely to ban you if you break rules or assault people at their events, inside their establishments or while using their services, but they're unlikely to ban you for something unrelated to them. That would be a slippery slope.