Sorry, but that is just such a bullshit quote. They want to have control on identity and that's it. URL as the article say stands for Uniform Resource Locators and is about locating resources, not proving identity.
They are trying to solve an issue which isn't even part of the responsibility of the URL. The domain is the truthteller here. If you can find a way to display to the user what actual domain he or she is on,you have solved the issue.