People are talking about it, at least here anyway.
replyThe reason you don’t see it in policy discussion from the officials pushing these laws is because removal of anonymity is the point. It’s nit about protecting kids, it never was. It’s about surveillance and a chilling effect on speech.
You do see it in policy discussions from officials in the EU. You probably don't see it in policy discussions in the US because the groups that should be telling US officials how to do age verification without giving up anonymity are not doing so.
replyZero knowledge proofs are only private and anonymous in theory, and require you to blindly trust a third party. In practice the implementation is not anonymous or private.
replyWhat third party do they require you to blindly trust?
replyTechnologists engage in an understandable, but ultimately harmful behavior: when they don't want outcome X, they deny that the technology T(X) works. Consider key escrow, DRM, and durable watermarking alongside age verification. They've all been called cryptographically impossible, but they're not. It's just socially obligatory to pretend they can't be done. And what happens when you create an environment in which the best are under a social taboo against working on certain technologies? Do you think that these technologies stop existing?
replyLOL.
Of course these technologies keep existing, and you end up with the worst, most wretched people implementing them, and we're all worse off. Concretely, few people are working on ZKPs for age verification because the hive mind of "good people" who know what ZKPs are make working on age verification social anathema.