> It is virtually impossible to identify and segment your user base and apply the bill's protections to only those you can 100% confirm are under 18.
Doing this might be(come) possible by completely destroying anonymous web browsing.
How? Idk and it wasn't mentioned, but you could imagine Credit card checking, Electronic IDs, post-ident maybe backed into the browser for a one-click identification.
Though it's all a hypothetical on unwanted side-effects. I don't think it too concerning as people value random websites less than their personal data and I'd expect websites using the "everyone is a child" approach to have the advantage.