Earlier quoted context omitted.
At one point you stop watching TV, because there are no more new things to watch, you stop reading novels because they aren't novel anymore, you stop going to the bar because there's a fixed amount of alcohol you can consume, it costs money, the bar has opening hours. Smartphone follows you everywhere, all the time.
if You can get bored of novels with all their formats and styles and character arcs and high complexity why can’t you get bored of scrolling through empty one-or-two line updates of people’s lives that you know don’t r fleet reality? It’s basically a worse novel that also makes you feel bad for reading it.
It's the same effect that gambling has on the brain.
You keep playing, even though you keep losing.
That's the danger and that's why books, the TV, movies, radios (music in general) and other form of entertainment are not equally dangerous, because usually you are able to stop before it gets too far.