This is a peculiar way to act. Imagine a person who says she knows nothing about the Japanese language. Not even how to count to ten. Now imagine I say something about Japanese transitive and intransitive verbs, which sometimes baffle Americans. Yugo jumps in and says "you are wrong!" I ask why. She says, "Hey, I have never studied the subject. Don't expect me to know this stuff." Which is it?!? Do you know what you are talking about, or don't you?
What fascinates me is that despite this being pointed out repeatedly, the behaviour still exists. It's basically the very definition of 'pathological'.
It's like the Mizuno bucket thing... Yugo is so adamant that Kirk did not claim that nearly the whole bucket evaporated overnight - but if he'd only read the papers, Yugo would have understood this is exactly what's claimed.