Well, that too. But I did absolutely enjoy the living hell out of it. I feel it's a great adaption of the novel, realizing that it is not possible to make a blow by blow, page by page adaption. Also, when filming a novel, it's ok to make some changes and be creative. That's what movies are for. Hell, I've loved some of the changes that have happened in for example LOTR or Harry Potter because some things were just clonky in the novels. Same here. And I LOVE Dune. The novel I mean.
Actually, I love both Part 1 and Part 2 as well. For many reasons. Yes, I would have loved a bit more depth on a few things. But it would make the movies so much longer and make them drag on.