If it's smart it won't be what you planned, but it'll almost always be what you like. If you thought the Vader scene at the end of Rogue One was stupid fanservice, it leans one way; if you went "FINALLY! YES!" it leans another. Lather rinse repeat across many potential inputs.
With the right sensors, your sentiment will be apparent to the system and it will be able to tune on the fly.
I think curated interactive environments like games are a much more realistic application of those distant technologies than automatically modified Hollywood movies on the fly.
And personally, I have absolutely no desire to modify movies that bothered me, story-wise, artistically, or editorially, with my own ideas. Likewise, I also don’t want to modify classic paintings to make the people fit my preferences for attractiveness. And I sure don’t want it done automatically.
Art is interesting because it comes from other people’s brains.
With the right sensors, your sentiment will be apparent to the system and it will be able to tune on the fly.