I'm obviously not going to show my id to Zuckerberg's website or any porn sites, casinos because I don't trust those bastards. They're also not the police, so they lack the proper autoritah to request my an id.
I think the point of the comment you are answering to is that in Switzerland, they are building a system where you can prove your age without telling who you are to the website, and without telling which website you visit to your government.
The government might not know which website exactly, but the fact that you are looking to verify your age is in itself a datum that you might not want the government to know. "Palata was either looking at porn or buying drugs in January 2026" is probably not something you want the government to know, even if the specifics are obscure.
