Outside the classroom there are still plenty of in-person activities from informal gatherings, to sports teams, to clubs and civic events, and in those situations, the few people who are sitting on their phones are the ones more separated from the rest.

I think a lot of us who were early involved in building some of the web that led beyond Web 2.0 into algorithmically-driven media consumption see the massive dangers, and have probably sometimes even overreacted in terms of kids' access to it, but it's certainly better than the alternative.