A point to consider is that The Kinect and other similar motion controls are primarly being aimed at getting non-gamers to play games. The information being spouted sounds informed to someone who only has a casual knowlege of the subject as what he is saying seems to match things they are seeing themselves, albiet without truely understanding.
Your "casual" doesn't follow gaming well enough to know about the troubles facing PC gaming right now, and that while not dead (and something that will never be dead) people in general are gaming more on consoles. Issues with DRM, hardware upgrades, pushes for the platform to go 100% digital, and other things have all caused a lot of people to reduce their support of the PC as a gaming platform. People did not suddenly decide "oh wow, the Consoles are better and more functional for this, let's switch to them".
What's more, while there is some truth to the arguement that Halo did manage to be a decent FPS game on consoles, this happened after a lot of trying. What's more Halo and other FPS games on consoles have still been comparing unfavorably to similar games on the PC in terms of performance and so on. I still remember how when the "Shadowrun" FPS game came out, it was a big deal that it was going to have PC gamers and console gamers competing on the same servers. In practice this lead to some major problems since in the end even if getting to the point where they could be fun, the mouse and keyboard were far more precise and responsive than a keypad could ever be when it came to competitive play in games like this.
The acheivement of getting FPS games onto consoles was also a long time in coming, with various failed attempts along the way due to lack of proper control response. Control response being a big problem with the motion controls that we see now, and something that critics, including guys like Yahtzee, harp on constantly. Things like "Kinect" and "Move" simply aren't advanced enough by all reports to handle more advanced games, for the same reasons you see with the Wii. This is also why the games we are seeing are so simplistic, as complex controls and manuvers are where systems like this continue to fail.
One can argue that such systems might get better in the future, but that doesn't change the fact that they aren't all that wonderful right now. The companies interested in the technology and wanting to profit off of it right now, and hope they can improve it, of course have to sell this as best they can right now, and that seems to include a lot of misinformation.
The plan by and large seems to be to try and finance this new control scheme by selling it to casual gamers, hoping they can improve it, however even casual gamers have become more savvy than normal due to the Wii and it's failures in going beyond the most simplistic kinds of games and control systems. As a result analogies like this are being made to try and convince people this is something more than it is.
Oh sure, consoles eventually did see good FPS games that could work on a keypad, but the motion controls have not gone through equivilent refinements so far. If they had, I think we would be seeing far more from the launch titles than what seem to be variations on casual wii games. Typically it's the release software that companies try and wow you with, and I don't even see anything marked "coming soon" that is remotely impressive, or doesn't simply rehash what the motion controls have been doing for this console generation so far.
Basically I think that if "Kinect Man" wants to see his product be acknowleged as something other than I'm saying, we need to see some serious games released for the format. Truthfully I'm not entirely sure how many casuals who already have a Wii are going to line up to do what amounts to the same thing with prettier graphics due to a more powerful "box" behind it.