Yes, we did cover it 25 pages ago, and as I explained then (and as others have already mentioned), you can turn everything off. I explained this and confirmed it with links to an interview with someone with MS.
For the record, one more time, everything to do with Kinect can be turned off. It still has to be plugged in, but the whole thing can be turned off. Just don't ask me to explain why it still has to be connected if it can be turned off, as I'm yet to see an explanation about that.
It boils down to an issue of trust, MS says it's off but they've shown themselves to be a confused mess of a company with links so data gathering