Fewer and fewer countries. I think none of the countries I've been too where I've purchased a SIM without ID allow that anymore. It is required to try to limit purchase by scam call centers and to enable phone number portability.

And if such a country wants to keep kids off of the unrestricted internet they should just ban that practice.

And HN would complain even more about the loss of privacy.

So, they can change that if they want.