> If you realize that people have been required to check ID when selling material unsuitable for minors in physical stores

Not a great example.

No physical store would bother to check the ID of anyone clearly not {too young or borderline}.

Digital ID requirements are such that age verification of some form is required for every single connection .. and to assume that a connection from {X} might well require another ID check an hour later as it might well be a different person at the same computer or another device altogether.

That's an expansion from {only check young looking people} to {check and possibly retain records for _everyone_}.