IMO, I don't really agree with banning people for breaking the rules (except for extreme circumstances ie. regular repeat occurrences and complete disregard for rules). I do think people should play nice and treat everyone around them with respect, but banning is just too extreme for the days of played time people have put in to their characters. I can understand suspensions, but not the ban hammer. Not with Sony and not now.
There are to many other important issues for the server team to worry about. Having to police childish behavior takes away time that could be spent developing new ideas to make the game more fun. The rules are VERY SIMPLE. If you don't agree with the rules and don't want to follow them, find a new G.D. server and free up some space for the rest of us who follow them. That is all.