> Surely the problem of verifying a property of someone (the Boolean of “is over X age”) without sharing further details, is a surmountable problem given all the cryptographic technologies at our disposal.
Only if preserving privacy is the goal and I'm sure we both know it isn't.
I guess it will become self-fulfilling if everyone denies that there are privacy friendly options. Legislatures globally are starting to take this seriously so chances are it's happening one way or another.
"Everyone" isn't denying there are privacy friendly options. The government does not want to implement privacy friendly options.