but why does it have to be that way. why not have zkp age verification processes anyways, inconvenience aside, what's the harm. If they refuse to let us use them, they need to explain why. I don't disagree with the malicious intent you're talking about but we can have it so that they have no legitimate excuse to require collection of site visit data. all the emotion and fervor aside, why can't we talk about having this as a standardized process that excludes third parties.

Governments are banking on being able to purchase that site visit data anyways, bypassing their own laws that prohibit them to do surveil, we can require them by means of technology to comply with laws and for the last time resolve the "but the children" argument.

You can also... ask someone else to pass selfie-age-verification during an account registration, no?

it works if it is time-scoped and full age/id verification is done directly with the government. if you're malicious that way, you can likewise verify your id/face and just give a minor access after verifying anyways. you can get a zkp token that can prevent the site owner and the government from colluding and revealing your activity. zkp is one of many ways to solve this as well.