Wasn’t Chapterhouse the last Frank book?
Either way, Herbert hasn’t aged well. I read Dune in 2012 and loved it, all the way through Chapterhouse. I reread it all about six months or so ago and it was painful. Joe Biden defending his record on racial segregation painful.
Okay, bit of an exaggeration there. Unlike Biden, when judged as a product of its time, it’s fine or better. Today, though, it just comes off as horny for dominatrices at best, and everything goes downhill from there. Shame, really: the cultural elements outside of the Bene-connected stuff (G or T, irrelevant really) holds up strong as nails, still some of the best worldbuilding I’ve seen done.