What, really?! How retarded is that?!!!
So the Pro Controller plugging in is simply just for charging it and nothing else at all, it still transmits it's signals to the console wirelessly even if plugged into the USB?!
Nintendo not adding support like this, their inability and ineptitude with online and user accounts, as well as their inability to create a machine attractive/beneficial/or even helpful to 3rd Parties makes me wish they went 2nd/3rd Party all the more. They can't make decent hardware, software wise they're still great but hardware... tripe!