All of the prequel stuff and the books post Chapterhouse Dune are what happens when children take over the family business and run it into the ground, set it on fire, and grind the wreckage into dust. They are like the Highlander 2 of book sequels. Or imagine if Jar Jar Binks from Episode 1 was the best part of all three prequel movies made by a George Lucas with less talent.

Unpopular opinion but … as a lifelong Dune acolyte, I think Chapterhouse is favorite one after the original…

Chapterhouse was very decent, the whole series with ups and downs are works of art. Sad that Herbert died before closing the cycle.