Why would anyone be concerned? It is a matter of FACT that damn near everyone on this board has a gmail account which does exactly that. Half the people here have android phones doing exactly that. We have given up a certain amount of our freedom in exchange for a service. At any point if someone decides to throw a sex toy party in their living room they can unplug the Xbox, just like if you were going to do something's you would not send them through your email.
So your argument is that since we're already being spied on what's wrong with a little more spying? You already have a camera on your phone so why not have one in your living room and/or bedroom as well! Right?
This is the main thing being discussed. MS WILL use the Kinect in a way that you don't want it to. As its already been pointed out it the fact that if you can disable the Kinect then why would MS still require you to have it connected? Why? What's the point? Why do they NEED the "disabled" Kinect to still be connected at all times?
I'll tell you why. It's because it's never fully disabled. If it were you wouldn't need it.