Maybe I am misreading your post, but why does it matter if people behave in a certain way en masse, when the majority of the personal impact is based on personal behavior.
This is the actual answer... but social networks are super sticky, and trap people in with the threat of cutting other people off who also cant/wont leave.
Despite the outrage, I think only a minority of users think this.
Most twitter users like it, and didn't even attempt to move to another platform.
I personally tried substack notes, mastodon and bluesky, and none of them bring 0.1% of the activity and interesting things that used to happen on twitter.
Now twitter is less interesting than before, but it still the only candidate that is worth my time. Even reddit is slowly becoming meh.
I'm certain that the new generation, however, is creating their own wonderland in a place I'm not active in. That's how we got twitter started, it's usually the young that stir those things.