I’m not saying that you have to be religious. But if you find those topics and related symbolisms rather uninteresting in your sci-fi, then the books may not be for you.
I mean, it's not my fandom, but Catholics do have a wicked sense of symbolism and decoration. Hyperion wouldn't be as colourful if Simmons used a bunch of Evangelicals instead.
Well, i detest jihadism, but still could enjoy dune
People are interesting, and religion is a thing people do.
In this case there is quasi-religious imagery but you as the reader aren't actually supposed to be mystical about the god/devil in the story the way the characters themselves are. It's not C. S. Lewis
Do you also find LeGuin uninteresting?