We're talking about very different systems. In Spain, for the past 82 years, all citizens have had an official identity document issued by the state. This document contains an electronic certificate that allows us to identify ourselves online to government agencies. With this type of infrastructure, a neutral state point is viable, one that simply certifies and responds with true or false to the legal requirements of any particular online service. The online service does not receive any other information than the complaining (or not) of the person on the other side of the connection with law requirements. No other data have to be shown or saved.
I don't see the connection with free software because I'm not aware of any legal restrictions on using free software repositories by underage, and I cannot imagine it as a political possibility.
CC:
@bjoreman@toot.cafe @HennaVirkkunen@ec.social-network.europa.eu