It's just a mistake. A 'doh' moment. It's not a big deal and the mistake can be politely or humourously corrected. Now if a person continues to complain about something that is their fault but don't recognise it as such, that's different.I find it disingenuous to say the controller battery life bothers you, when the problem is entirely yours and has nothing to do with the system, don't you?
As for recharging, the tiddly USB cable is a bit cheapskate, but I have plenty of other longer cables and I'd be surprised if other console owners haven't also. Playing FIFA we'll use an extended USB cable plugged in if any of the controllers are low on juice. And they recharge very quickly too. I can't really fault the controller on any aspect. Works very well IMO.