It's just entertainment. You could say the same about books or TV. At least Facebook, Instagram and TikTok are social and interactive and encourage people to produce content instead of just consuming passively.
Someone who’s watched a bunch of shows is called a binge watcher.
No matter what they’re called, reading specifically requires more active thinking than watching stuff. I wouldn’t say theyre the same.
It is just that simple content tend to choose easy to digest mediums, there is not much demand for low effort literature today since people just watch movies instead.
Thats why i mentioned reading books also requires more “active” part of the brain rather than passively watching.
My main point really was that reading requires a more active effort than watching which is passive.