I agree with you that people should avoid using it, but I agree that the state should but out here. If you want to enforce this sort of thing, make it at the parental level.
What's so bad about it? Production if often unethical and that's a problem but is there more? (and if production was the problem they wouldn't just put an age limit)
Is this about religion beliefs?
Again malicious or lazy.
So this is a pretty practical solution to protect the kids without infringing on adults freedom per se, because even if some adults lose access, as I said, nothing of value is lost.
We're already seeing the massive over-blocking and encroachment starting, just weeks into the age blocking in UK's Online Safety law coming into effect.
Privacy is of no value because you decided that porn is bad for me?