Are any of the non-Frank Herbert Dune books worth having?

I’ve only read Dune and soon I’m going to re-read it and actually finish the original series. But when I was younger I also bought The Butlerian Jihad and the Battle of Corrin for later reading. I only have The Machine Crusade missing. But I was wondering if it was even worth my time reading those because I heard horrible things about the “expanded universe” of Dune, and that the original series is only the best one.