Only temporarily. There could easily be situations where there wasn't the desire to put furniture there, but there was clearance to allow the TV to come out - and then disappear when done.
I guess I'm not following you Clint.
You need to leave the space at the foot of the bed clear so that the entire television is clear of the bed before it starts pivoting up (at least going by the video on their web site). Once the television pivots to its normal vertical viewing position, it extends straight up.
But, you need to have at least a space as deep as the height of the television and as wide as the television clear of anything at the foot of the bed. My guess is that, for safety reasons, if the television, when it extends out from under the bed, encounters anything, it'll have to stop and go back to its storage position, much the way your garage door opener will return to the door to its raised position if it encounters anything on the way down. Otherwise, that's just a law suit waiting to happen. (At the same time, though, it's kinda fun to imagine putting one of those yappy little rat dogs on one of these, and cranking up the pivot speed so that you can launch the little critter like a catapult).
What's deeper? A cabinet at the foot of the bed out of which your television can rise up, or, for the sake of argument, let's just say the vertical dimension of a 42-inch television?
Unless, of course, you're just going to leave it in the viewing position all the time, and if that's the case, I'd want a much more attractive alternative. This thing is UGLY.