Sure, you could use this to simulate your desktop(s) in different environments, but what about simulating multiple monitors?
Say I bought a new PC, I wonder if we would be able to just buy a VR headset instead of a monitor. We could just use that to virtualize as many monitors as we wanted to the limits of our GPUs.
If this was mentioned in the video, oops. Did not watch the whole thing, just skipped around.