I don't think you can make a coherent and understandable movie-Dune without using voice-over character thoughts. You need the footnotes.
It's a tricky device, because it's so easy to overuse, but Lynch mostly limits himself to where it's really needed. AND makes it play better with his trademark dreamlike mood.
Villeneuve's Dune is what you get without this -- I hope everyone read the books! Which on one hand, respect your audience. But on the other, most people haven't read the books.
E.g. Lynch Gom Jabbar: https://m.youtube.com/watch?v=QrCfivcQe48
Villeneuve Gom Jabbar: https://m.youtube.com/watch?v=mbTp1vlRqYA
PS: Wtf Lady Jessica in Villeneuve Pt I? She's got enough mettle to defy the Reverend Mother and bear a male child, but then all that strength disappears? I get it... setting up for contrast with Fremen Jessica, but hamfisted. :(
People still enjoyed it, though.
I read the books after the movie and yes, there is so much more to the whole world, but apperently other people enjoyed it without further context and are eager for part 2 so apparently the movie worked for them as well.
Honestly, I want to go back and watch the Sci Fi miniseries too, which also had a sequel that goes through Messiah and Children.
That may be the kind of thing you’re seeing: not everyone may see “she privately struggles with difficult emotional experiences, and doesn’t bottle that up, but perseveres and kicks ass anyway” as weakness.