> Or maybe it's because we actually treat majority of people like little children.

At 42, I've felt this is the cause for quite some time. You see it in things like the adult Disney woman[0]. Part of it is playing it safe so as not to offend the conservatives with a nipple, but market forces have been driving movies this direction as well[1].

Gutting education to dumb down the populace hasn't helped.

[0] - https://youtu.be/vLIfkiF8NeQ

[1] - https://www.gq.com/story/the-day-the-movies-died-mark-harris