I first ran into that one over on the Delphi Forums. The advocate over there would respond to any critic with, “I’m not here to debate. I’m here to inform.” :^)
I would fire back something like “If Ancient Rome never existed, then how do we have Rome: Total War 1 and 2? Huh? huh? Never considered that, did you?
Because trying to be rational and factual with idiots is a loser’s game lol.