I agree. His later work just became bad and in desperate need of an editor. The later novels still had some great ideas, but they were gunked up with long rambling dialog about government, religion, free love and taboos. When I go back to his later novels I find that you can just read the first few chapters to get the big idea and then skim through the rest of the book to get the gist.
This doesn't make me want to pick up Stross' book...