I think most people who actually read ligotti are probably reading his fiction. Because it’s generally pretty great cosmic/weird horror and some people are into that. Myself included. I assume you’re talking about his philosophy book that season 1 ripped off. That book is definitely a take. I don’t really remember it well enough to feel strongly about it, but it’s obviously a disturbing thesis. I guess the stories do tend to reflect that some, but they are very much their own thing and well worth reading if you like the genre.