When you go to a bar, the bouncer checks your ID and determines your age. He will not remember your name. He will not inform the government you are at the bar. He will not write down who you met with or talked to. We as a society trust he will not do these things. You are still anonymous from the perspective of the bouncer.
If humans really truely tried I am sure we could design a transparent system for verifying age or human-ness that we (tech paranoid Lemmings) could trust, but it doesn't seem like governments even want to try. They just want to track people.
AI engagement will be the death of the internet and democracy if we cannot stop it. We have Paleolithic emotions, medieval institutions and godlike technology.