Maybe in the USA but i am not from there. All these services require to log in with your real identity at least once and depending on the service you can use it with your set up email address in read only mode, for example the DMV equivalent service allows you to see your vehicles, tickets (and pay them) and other info but in order to change vehicle owner you will have to log in with real identity provider.
My point is: these services may require identity, but they don't truly need it, could work without it, and it's only a bad design that they do ask for it.
I do agree that i could use anything (email, phone etc.) to login in those services but this "something" would be still mapped/tied to my real identity (in a previously validated way). So if it is the first time i am using DMV online service, i can login using my real identity because that is much easier than going to real world location and getting my account credentials.
