I think my many objections are perfectly summed up by this one example. In the books, the “weirding way” is space kung fu. In the movie, it’s a random sonic weapon where for some reason if you shout Maudib at it, it fires. So, the line from the books where Paul is lamenting “my name has become a killing word” changes from a poetic lament to a _literal_ instruction to his army. Queue a ridiculous montage of people shouting over and over with lasers.
Denis’ adaptation captured the dread of the scene, the aesthetics of the fremen, and the religious furvor of it all. It feels solemn and full of portent in the way the books did, because it follows them slavishly, only making small changes to compress multiple characters or omit less important parts. I couldn’t have asked for a better adaptation as a fan of the books.