A screenshot of the login page
My first reaction was that this was an example of the password anti-pattern, ie the user is being asked by MyHabit.com to present their Amazon credentials.
Axel pointed out to me that this was actually an Amazon page and not a MyHabit page, but branded to look like a MyHabit page - in Axel's words
So it's not password anti-pattern, because MyHabit never sees the user's credentials.
But it is, to my mind, misleading, because the MyHabit branded login page may make it feel to a user like they are presenting their Amazon password to MyHabit.
It's not password anti-pattern, its the 'anti password anti-pattern'.
A taxonomy is called for