I'm not sure if that makes it better or worse; the Fremen society is shown to be threaded with the machinations of the Bene Gesserit. Of course in the books the Bene Gesserit are themselves not treated entirely sympathetically, to put it mildly.

It may be fairer to say that in the original books the complexities of the situation and its historical context are much more fully explained, and the overall morality is much more complex. But the screen adaptations of Dune tend, I would say, to lose that.