The ZK part isn't the problem. The "attestation of recent humanity" part is. Who attests? What happens when someone can't get attested?

You've been to the doctor recently, right? Given them your SSN? Every identity system ever built was going to be scoped || voluntary. None of them stayed that way.

Once you have the identity mechanism, "Oh it's zero knowledge! So let's use it for your age! Have you ever been convicted?" which leads to "mandated by employers" which leads to...

We've seen this goddamn movie before. Let's just skip it this time? Please?