Agreed. Of course, emails are also insufficient because people don't want to use them as their identifier across sites which is why your account email is priva

Agreed. Of course, emails are also insufficient because people don't want to use them as their identifier across sites which is why your account email is private on every social platform and only used for internal notifications and forgot-my-password. People don't want a global identifier that connects every utterance they have across the internet with the same identifier they, for example, send job applications from.