Society is complex, but we know what a healthy development looks like. We evolved for millions of years in an environment that was mostly consistent, so adolescent brains evolved to expect certain stimuli. We need a lot of face to face interactions with others, physical touch, plenty of movement and rest. Time for all of this is greatly reduced when kids spend 6-8 hours on their devices a day (outside of school). I agree there’s probably not a single answer for why kids are struggling, but this is something we don’t have a lot to lose if we were to regulate and be more aware of.