Haha, my experience is people making those sorts of pronouncements will argue literally anything so I definitely wouldn't assume they are uninterested in arguing facts. Though I agree though that arguing with some people is obtuse and you arguing with the original post seems one of those cases.

More my confusion is the person I was responding to complaining about people arguing morality, which seems incredibly important to discuss. Lack of facts obviously makes discussions bad but there's definitely not some dichotomy with discussing morality (at least not with the people I know. My issue has not nearly been as much with people arguing morality, which is often my more productive arguments, and more people with a fundamentally incompatible view on what the facts are).