i think parents are worried bc once upona time dumb people weren't encouraged to be dumb bc it wasn't common to be dumb, but with the internet, dumb people can find their own communities and pool off their collective ignorance
the problem is that while this is true, it doesn't mean the entire internet should be nuked
it does not mean that screens are overly addictive either bc everything we did on different things once upon a time we do on screens now. You can write stories on a computer, socialize, play games, etc.
It's not fair to say that because someone uses their computer a lot they're an addict
now if they spend 10 hours a day on Twitch, yeah you've got a problem.