Actually, reading the quote in full context, I get the impression she is talking about the far-flung future when the battery stops charging. This looks more like bad wording that stupidity.
Also, as a counter-point to her cost point, how much money do you spend on normal AA batteries for a 360 or Wii controller in the amount of time that it takes for that battery to actually die and stop charging? And in the estimated amount of time that that takes, are you even going to need a new controller, or will the PS4 be out already? Those batteries tend to last for a long fucking time.