You're contradicting yourself right here, in a way that seems to indicate that you don't understand the important difference between these two circumstances.

Something that's pragmatic is merely mostly correct or most of the time correct. One could say the same thing about racial stereotypes in the US -- which is to say that heuristics shouldn't be treated as an argument. It's only at best a starting point. Quitting at that point is the worst kind of mental laziness.