I remember when social media was sane 15+ years ago. The problem is the business model, not socializing. It's crazy to ban it when being a teen is the beginning of socializing!
Then we got the one-two punch of social media apps on phones, and everywhere we saw these get adopted, we saw depression and anxiety increase en masse.
My own theory is that if you have to pick one thing it's the phone, because screen time/attention skyrockets when you get one of those, and they can have you freaking out about whatever clickbait they're feeding you pretty much 24/7. When I grew up there was just a computer in the den and when I wasn't in the den, whatever I'd viewed on it was out of sight, mostly out of mind.
And in fairness, dosage is the difference between a painkiller an a heroin addiction.
So why are we surprised that when we put a TV in the kids' hands things got even worse? Meta testified on the stand recently that they're not a social media company anymore, they're now all about video. Tiktok is the new TV. Every app wants to Tiktokify. The money from TV, just pushing an endless stream of video to someone, is very good.