Yes, this is a dumb question. It may or may not eat up bandwidth, but I agree that it is no more moronic than the 3-eyes thread mentioned by Gorgon Heap.
Of course it is never going to happen, but on that hypothetical plane of creativity and imagination it is interesting to consider. Would a ban from the boards mean the end of the Straight Dope column? And if so, would someone replace him? Or would we continue in an anarchic message board community with no great leader to guide us (excepting the mods and admins)?
Another consideration is that if Cecil were to do anything that would cause him to be banned under current rules and regulations, would he be punished similarly? Or would the rules and regulations then change to accomodate what Cecil has done?
These are all completely hypothetical, and for the most part, rhetorical questions. Ponder as you will.