So far as culture wars go, well, it was long enough coming. This was on the horizon back in 2015, probably earlier. Hollywood will never be diverse because what we consider diverse keeps changing, can't really be predicted and the industry is based on nepotism to start with. Movies are already divided, they are marketed to a demographic and often that demographic falls along those lines. A Hollywood movie begins by saying something like "let's sell something to middle-aged white women" and if anything else pays for it that's just a bonus. Movies are made now first as a marketable commodity.
There's no real reason to ban movies because Hollywood won't put out a big, popular movie that really goes hard against the government, anyway. Books need to be banned because there's too many independent publishers to control them in the same way. Books are almost always about something that isn't just the narrative story which makes them much more dangerous about a superhero movie with the depth of a saucer of milk. There's nothing wrong with liking those movies, but they're not deep. There's nothing wrong with liking ice cream, it's just not healthy.
I wouldn't call any society "normal" but you do make a good point that the movies create a shared social experience-- something that societies are built on-- that streaming does not. However, no one is interested in friends anymore. They're all "introverts" and media and companies are their "friends." The rest of us are alone. (Sorry, what episode of black mirror is this?)