To see the requirement for the non-affilation goto https://login.wordpress.org/

EDIT (to save having a 2nd post). Looking at the HTML tags for the requirement it has the class "login-lawsuit", so guessing this is tried to the suit WPE are bringing against WordPress/Matt.

On one hand, I personally feel like Matt is trying to speed run burning all the goodwill of the wordpress project, on the other hand if you are being sued by an entity its pretty much recommended to cut ties with said entity and only deal with them via your lawyers so I can see why they would put in such a requirement.