That's the parents.

The expectation that "Parenting" is now outsourced to Teachers, to the Government, to anyone else. People seem to expect they just have a kid, and somehow magically they'll grow up to be a perfect person without any work from themselves. So there's over-reach, there's pressure on making "unworkable" soutions, because the people they're trying to force "solving" the problem aren't the people in the best position to do so.

Your comment seems working from that very same assumption.

Yes, all the "technical" part of content filtering etc. is very much a solved problem. The issue is that's not a "zero effort" solution - they still need to be enabled and managed. And I'm not sure that's a "technical" problem than can be solved.

There's huge pressure on teachers etc. to "solve" these sort of problems - just go to any PTA meeting and there's a lot of loud voices asking for stuff like the laws the original post is highlighting. And politicians listen to the loud voices, and feel they have to be "seen" doing something. Even if that "something" is impossible, unworkable, and fundamentally harmful.