i actually like those [pre] jokes and i don't think that they are offensive.
but imo, almost everyone has opinions which almost all other people dont accpet. i mean opinions which are represented here, like not agreeing with the fact that jokes are made about the own clan. No awful opinions i mean. For example when people say "terrorism ftw", then i'd say "what's wrong with you" too.
But in a case like this, i can understand Berkan, i don't think he needs any good reason why we should stop making [pre] jokes. He just does not want it, and we dont die if we stop joking like that, so i would not have any problem to stop joking about pre!
since i think you dont have to give a good reason than just to say "nah i just dont want to do it now" in very unimportant cases.