Having read more from Thiel and his cadre of technofascists that I’d like, I think he’s a believer but in an esoterica, Nazi-occultism way. Lots of neo-Nazi groups love getting deep into the weeds of the occult and esoteric, remixing myth, religion, and symbolism into a world view built for themselves. Does Thiel believe in a literal devil, very doubtful. Does he believe that there is a more abstract, shifting, morally repugnant (to him) force he is in a position to defeat, absolutely.