My main objection to these type of technologies (I feel similarly about voice control) - is that I don't WANT to use large hand gestures (or verbal expression) to control my device. It's exhausting, and too much interference with the ambient experience. I can control my whole desktop experience with very little wrist motion using my speedy mouse. I have a bunch of extra buttons under my thumb for a variety of tasks as well.

Reaching out with my whole arm to click, or pinch to zoom, is a HORRIBLE user experience. (For most things - clearly VR games and such will be fine).

It seems I can connect an ordinary keyboard and mouse to it though, so I could see using it as essentially a really large monitor. As long as I can point and click with my mouse independent of my eyes or head position, and my text-entry focus doesn't move without permission.