Everything people create for other people has a usability/UX component, including movies.
What is the thing people interact with in movies? The “story”.
We may not interact with it in the same way we do software, equipment and real-world objects – we can’t touch or control it – but it has an “effect on us” as an audience.
A reverse interaction, from the audience’s point of view.
The same can be said for music, books, art, blog posts, documentation, teaching…
Creators of content need to be just as aware of UX as creators of things people use.