I wouldn't go that far. It's just a matter of aptitude. The vast majority of people are not aware of their own ignorance (it's not an easy task to realize what we don't know, even though what we know is finite, and what we don't is INFINITE).

I have no problem with him, and I don't think he's unintelligent, but I do think he fancies himself a philosopher while having little to no understanding of philosophy, which is fine, except for those at or under his level of understanding for whom it can be misleading.