Earlier quoted context omitted.
> The fundamental question that needs answering is: should we actually prevent minors below the age of X from accessing social media site Y? This is only an interesting question if we can prevent it. We couldn't prevent minors from smoking, and that was in a world where you had to physically walk into a store to buy cigarettes. The internet is even more anonymous, remote-controlled, and wild-west. What makes us think…
> We couldn't prevent minors from smoking, Smoking rates among minors have plummeted and continue to decline. That's not really a good example because the war on underage smoking has been a resounding success. Yeah we didn't stop every single minor everywhere from ever smoking at any time, but the decline was dramatic.
This is the right way to reduce childhood social media use: Make it socially disgusting, and make it widely known to be dangerous.