Yeah, I don’t think anybody except thr OP has ever complained about Dune not feeling visually weighty and powerful, so it almost comes off as a disingenuous criticism of the film. OP is comparing stills from two movies and essentially pointing out that one is obviously digitally color-graded and the other is obviously filmed on celluloid and not color-graded. The difference is obvious in a side-by-side comparison. However, if you actually watch Dune beginning to end, your brain accepts the color palette as part of the visual language, you don’t even notice it.