Look at how many people are bemoaning Microsoft to remove Kinect, even though it has a wider field of view, high resolution, can track up to 6 people, works perfectly in all lighting conditions, has twice the joint traction, and has a low power state mode. But noooo, we don't want Kinect. We don't care about Google or Facebook sharing all our information nor that our smartphones can track our every movement, calls, contacts list and more....but it's the Kinect that really worries us about our privacy!
I might start a new thread about this. All the upgrades your mentioned about Kinect 2.0 are effectively vapourware at the moment, as we haven't seen them in action in actual games. Just heard MS spin (which has been misleading around every other facet of the Xbone since May). People's experience with Kinect stem from the original 360 version, which was sold as being this incredible feat of technology, but in reality, was barely fit for purpose.
Until MS show of the new Kinect's abilities in real games - and they missed a huge change to do so at E3 - people will view it like the current Kinect. A accessory that's home to a graveyard of hyper-casual, lag infested shovel ware.
Not to mention the revelation around MS's involvement with the NSA and PRISM couldn't have come at a worse time for them. People quite rightly now distrust MS around privacy, so the thought of having a monitoring device permanently connected to a console is alarming to some. Even though, as you say, most people will have a bunch of devices with similar potential for spying on you.
Again, like with most things around the Xbone, MS communication and PR for Kinect has been abject. They haven't shown what it can do, why is can be awesome (and I personally think that the new Kinect has some major possibilities and should be highly publicised to show it as the main differentiator between the Xbone over its competitors).
I had no interest in the PS4 camera until I saw the tech demo videos from E3. I'll be getting one along side my PS4 on day one. Sony sold the idea of the camera to me. MS have just forced the Kinect down everyone's throats by making it mandatory and not showing off anything good about it.