First of all, the teaser video that came out at e3 during the Microsoft press conference was (like almost all of the Kinect demonstrations), pre-rendered and acted to by somebody who was paid alot to memorize the exact movement sequence. They did this to fool people into thinking there was no serious lag, and that you could even use a lightsaber effectively without having an object in your hands.
Second, while Microsoft made a big deal about Kinect being special because it didn't need controllers, it would be more profitable to them to release peripherals, and only incite hate from the 5% of the buyers who care/remember. The general populace tends to forget these kinds of things, and they could just as easily turn around and say "well we never explicitly said it couldn't use peripherals".
Third, apparently people aren't aware that Move operates with a CAMERA, and could also be used for force-pushes and such.