I think its not just kids anymore, it’s adults too. Everyone is glued to their screens these days. But kids are more vulnerable to influences from “social” media and don’t have any defences to the psychological warfare going on. Of course they feel like shit.
The child from the article got the phone in sixth grade. If she bought a large bag of candy with her own money is it right to let her eat as much as she wants without boundaries?
Setting healthy boundaries and discipline at a young age is a good move. From how she was behaving with the phone I would have done the same.