Another example of a stupid person on SDN who is still (relatively) sane is chitterling AKA Chithoryu12
Ideas may be stupid for many reasons. Holding a stupid idea opens one to mockery, and the idea itself is also able to be mocked. A 'versus' example of this would be the Alderaan Argument, which is so obviously incorrect it is only held by the truly stupid. Or the claim that all humans in the SW universe have metal spines (See Darkstar).