Comment by Brybry

These laws aren't just about porn sites though. They affect sites like Wikipedia. [1]

You don't need to verify your age to enter a bookstore or a library.

And if you really want to control who can access porn then the only way to do that is with a whitelist filter on the device being used. These laws are onerous without being effective.

I do think a standardized requirement for commercial websites to have content rating meta tags (like the existing content=adult and content=RTA-5042-1996-1400-1577-RTA) would be a good thing though, just to make more lenient filtering easier.

[1] https://www.bbc.co.uk/news/technology-65388255