Isn't what they describe exactly what EU is already doing?
"""The legislation should require anonymous or pseudonymous proof-of-age, data minimisation, selective disclosure, open-source implementation"""
"""A core objective of this initiative is to deliver a consistent, secure, privacy-preserving and user-friendly age verification experience that can be easily integrated into a wide variety of digital services throughout the European Union. The modular architecture and adherence to open standards not only ensure interoperability between national systems, but also allow online service providers to adapt the solution to their own technical and regulatory environments."""
Doesn't GDPR already require any solution to be privacy preserving? It kind of sound like people want EU to pass the same law again so that they can feel better about it. Of course if they do it most people still won't know what's in it and will keep complaining.