Same with the IQ thing.
People he likes he thinks have high IQs. Everyone else, low IQs.
It doesn't seem to occur to him that IQ measures some aspects of intelligence and not others.
Or that defining different features of intelligence as a single number is intrinsically unintelligent: a person can have a wonderful imagination, a normal ability to reason and a poor memory - what do you learn by saying they are of average intelligence, where the peaks and the valleys are really what defines them?
Or that slower, more patient brains solve different puzzles to quicker ones - think of the difference between Charles Darwin and Richard Feynman, or between a person whose brain can process a ball flying at them from one who can't, but who can nevertheless win a Nobel Prize.
Brains are colonies, or a machine with many parts. It's pointless trying to define them as if they are something else, as if a person for whom if one thing works better, everything does.