An alternative is that he isn’t on that list because he’s a bad person, like Hitler. He’s on a list of people GP doesn’t want to read. He doesn’t want to read Hitler because Hitler is a bad person, he doesn’t want to read Dan Brown because Dan Brown’s prose is clumsy and not worth reading, and he doesn’t want to read Ayn Rand for both reasons. (Sorry for the dig at the end. I think that’s funny).