We are seeking a solution to a social problem, not just a technical problem. If it fails to achieve most of the social goals, it won't be used and you get something worse. Welcome to the real world.

But the expected result here is that parental controls continue not to work very well, parents continue not to use them (at least competently), and people continue complaining that something needs to be done. So I propose that we do something about that rather than sit around continuing to roll the dice on the next half assed turnkey authoritarian solution than an inept legislator fields courtesy of a lobbyist working for a megacorporation whose interests tread well into the realm of the blatantly evil.