I read 95% fiction, but I feel like a book list from a notable in the tech field is expected to be mostly tech non-fiction, because, honestly, why would I trust a Swift developer more than anyone else for fiction reading?
(That is, there's no reason why his recommendations would be any worse than anyone else's, but I see no real reason I'd trust his fiction recommendations more than anyone else's -- being in tech doesn't mean we'd have the same taste in fiction.)