So, what exactly is the point of this line of argument? That some niche forms of touchless interfacing existed already? And thus the interfacing of the Vision Pro is not innovative?
Reminds me of the Magic Leap. Or even the Kinect. That use case is even more niche than VR, but setup some tracking gloves and you can perform gesture based actions on your PC (don't really NEED the gloves, but it improves precision without needing a special spatial comera).
eg: Theremoose - the Theremin Controlled Computer Mouse https://www.instructables.com/Theremoose-the-Theremin-Contro...
In the disability domain voice operations have a history.