From what I gather, the books devolved into a right wing screed in fantasy form. I read the first two and a half books, and stopped simply because they became a depressing slog. Goodkind also wasn't/isn't a very good writer in a technical sense. His prose is largely artless.
All IMO, of course, but there's far better fantasy out there.
All IMO, of course, but there's far better fantasy out there.