The argument they make seems to boil down to, there’s various reasons to believe that social media can be a negative influence on teenagers, social media companies are intentionally manipulative and amoral, the idea of this type of social media ban is popular with the public in polls, and the Trump administration opposes social media regulation. So yeah, not all that comprehensive. Notably lacking is a case that a youth ban is actually the right solution and wouldn’t cause its own harms, an explanation of why teenagers and adults are so different here and what that implies, or an acknowledgement of the cases against such a ban (for instance they make an uncritically positive reference to last year’s ban by Australia which is extremely controversial and has a lot of good arguments against it, like the privacy disaster of making everyone prove their identity to post online). To be fair the whole thing seems like mostly a really brief summary of The Anxious Generation, maybe that book makes a stronger point.

It has to be acknowledged that much of what makes up human culture and society is online now, and will continue to be going forward. The real question should be, what do we want that society to look like, and how do we move in that direction? Probably there is a lot more to it than passing laws that ban things. Calling social media digital crack and demanding teenagers to go live in a past that doesn’t exist anymore seems like a very head-in-sand attitude to me.