You're kidding. The "FIre ______!" thread is tradition. It's exactly what you described, a thread which generally houses the grievances and criticisms of the current boss.
I am having fun, but since you brought it up, traditions are not always a good thing. For example, we have a tradition of snatching defeat from the jaws of victory. I wouldn't mind seeing that (and the immediate "Fire whomever" posts) go the way of the Dodo.