Dune: Part Two - Paul's Choice: A Love vs. Power Theory

Okay, so I just saw Dune: Part Two and I'm still processing. Visually, it's STUNNING, no question. But I'm more interested in the thematic stuff, especially the way they handled Paul's choices. The movie really hammers home that conflict between his love for Chani and the Fremen, and the creeping power he's gaining through the religious fervor. I have this theory (maybe it's obvious, lol), but I think the movie is setting up a massive fall for Paul in the (hopefully inevitable) Part Three. Remember that scene where he drinks the Water of Life? It solidifies his prescience, sure, but it also feels like a deal with the devil. He sees the future, but he's also locked into a specific, horrifying path. And the more he embraces his 'Muad'Dib' persona, the further he gets from Chani, who represents the Fremen before his influence, before the religious fanaticism. I think his 'choice' isn't really a choice at all. He thinks he's saving the universe, but he's actually becoming the very thing he feared. My big question is how much of this was really in the book? I've read it, of course, but it's dense, and the movie definitely streamlines things. I remember the seeds of this conflict being present in the book, but the film brought it to the forefront, especially with Zendaya's performance as Chani. She's incredible, really conveying the heartbreak and betrayal. I'm wondering if Villeneuve is intentionally exaggerating certain aspects to make Paul's downfall even more tragic in Part Three. I'm genuinely worried for Chani! She deserves better than being collateral damage in Paul's messianic quest. Anyone else feel like they're making her too central in rejecting Paul's path so that she'll be the key to defeating him? Maybe she becomes the Lisan al Gaib instead of her son. What do you all think?