never really liked the authenticator, on occasion I asked a friend to do so'e seasonal quests/achieve'ents when I could not 'ake the' and vica versa, with an authenticator ya kinda screwed.
Guess it does add so'e security at least, but wasn't that one hacked aswell? so it is still not failproof, you still have to be carefull with what you download/click on/etc. So nothing really changes

Except for getting a pet!