It's imaginative with well-developed cultures stemming from an understanding of problems that we experience today or will likely experience in the future.
Unfortunately, cultural beliefs and thousand year ulterior motives don't translate well to film, so much of this is lost when watching the beautiful scenes of Timothy Chalemet.

A fun dive into the cultural interplay and hidden motives is this video, revealing just how complex and interesting the future world of dune is: https://youtu.be/R0krUthYxF4?feature=shared