What you're noticing is that Nick is a brainlet. Nick can memorize talking points, just like the typical college student is able to memorize ideas for a test, but he can't think outside the box, just like the typical college student isn't able to make quality research. So when Nick does his monologue, he seems smart, but, when he's in situations without /pol/ talking points, he fails. He doesn't know how to deal with black psychology and black grievances and he says the exact same thing that every other white person in his shoes has said, "Yes, Mista Nigga. You be right. Life is hard for a Nigga. Wez White people gotta be more compassionate and inclusive." This is the proof that Nick isn't smarter than other people. Even if his narcissism was cured and he stopped hating women and he accepted his homosexuality, he would still be a typical IQ 130, above avg intelligance, brainlet.