A lot of people can't touch-type. I can't, not really, I need to glance at the keyboard once in a while. My typing speed is comparable to touch-typists', which is why I never felt the need to learn to properly touch-type. The need of seeing the keyboard is problematic in very few situations in practice, and with a back-lit keyboard it's never a problem... as long as seeing my keyboard is possible at all, which was not the case in VR.

I could invest a lot of time to unlearn my current way of typing and learn proper touch-typing technique, but that's a lot of work and doing it just to be able to type in VR feels like a waste of time. With this tech I'd be able to work in VR without changing my way of typing. To me, this makes using VR for work practical for the first time. It's actually huge, and if it works well it's, to me and others in similar situation, potentially life-changing tech.