The problem is that it's impossible to get all of your peers to put down their phones at the same time and do the hard work of rebuilding normal social structur

The problem is that it's impossible to get all of your peers to put down their phones at the same time and do the hard work of rebuilding normal social structures and low tech communications channels. You (a teenager) can invite your peers to your house to hang out for some hours after school or on the weekend. In the past they would accept because they had nothing better to do, or if they did, that would be communicated and everyone would join. Today your peers are likely to just decline the invitation. There is plenty of entertainment at home: their phone. And if they came over to your house, they would mostly scroll on their phones anyway. It's a widespread, untreated, mostly-unrecognized addiction. Imagine how difficult it would be to quit heroin if all of your friends and all of their friends had to quit heroin at the same time or else no one can. The government will step in eventually.