I totally get the white saviour criticism from this movie (and even the next one). Villeneuve did confirm his plan is to follow the books storyline, which is a refutation of the white saviour trope. But until those movies come out (if ever) I can definitely see that being off putting to people. Especially since Villeneuve change Kynes death, which has a hallucination of Kynes' dad saying that the worst thing that can befall the Fremen is if they find a hero.
Where Paul (and then his son) doesn't save the Fremen, he destroys them, thier culture, their religion, himself, his friends, and his family. Also, the jihad was going to happen whether Paul lived or died. It was inevitable. He's just the Fremen figurehead. He's "the tool of fate" as the miniseries put it.