I'd even go one step further: it does not have to be enforceable at all. This has to do with teen's psychology. For whatever reason, kids just fight their parents but listen to their schools and government a lot more. Of course, there are exceptions, but I'm talking about trend. The kids in my school district were generally angry towards their parents when they couldn't get a smartphone when their peers did. However, when my school district introduced the strict ban of electronic devices in school, the kids quieted down and even bought the same reasons that their parents were saying: attention is the most precious assets one should cherish. Kids complained that the problem sets by RSM (Russian School of Mathematics) are too hard and unnecessary (they are not by the standard of any Asian or East European country), yet they stopped complaining when the school teacher ramped up the difficulty of the homework.

So, when the government issues this ban, the kids would listen to their parents a lot more easily.

Absolutely this. We have limits in place for usage of a bunch of this sort of stuff, from not at all to up to an hour, and we'd be constantly tested and pushed on these limits. Constantly. "But my friends are..." is the usual start to it.

Government says you can't chat with just anyone in Roblox, and suddenly it's accepted that this is just what it is. Not only that, but limits and rules on how much and when you can watch YouTube and the like are also suddenly more acceptable.

So far what my kids are saying is that this is broadly true across their peer groups. The exceptions are just that, exceptions. The peer pressure to be in on it all is lessened. And in turn, that means less push-back on boundaries set by us, because it's less of a big deal.

(And I face less of a dilemma of how much to allow to balance out the harm of not being part of the zeitgeist vs. the harm of short form, mega-corporation curated content).

That's exactly what its part of it.

So many people are looking at this from a technical stand point and how water tight or perfect its going to be.

But there is a large psychological part of this that helps parents and I know that part of it is what a number of parents I've spoken to like about it.

Its not just about the current generation, but the next wave of kids who have grown up under these laws, the psychology of it will have changed.

Yes, there is a normative aspect to it.

This also works with other things such as alcohol and (old school) smoking (neither of which has watertight control, but the control is still very effective).