Well, I agree but think it is even worse than this. Anyone who hasn't got wind of the opposition between rationalism and empiricism is squarely placing themselves in a very ancient thought-space, more Plato than Kant, no Popper, no modernity.

They are basically outing themselves as either having little curiosity, or as having had very limited opportunity to learn... Still if they expound on it, the curiosity deficit is the most likely explanation.