If by 'bus factor' you mean not noticing a city bus running me over, well I don't plan to do the walking on a city street, but in a park or forest preserve. There's a bunch near me. The chances of being hit by a bus would be borderline non-existent, and I'd expect the view to be fairly translucent by default anyway.

If by 'bus factor' you mean the business term of concentrating too much knowledge in one person and suddenly losing them (https://en.wikipedia.org/wiki/Bus_factor), then that's something the company should already be taking into account anyway.

If by 'bus factor' you mean something regarding a computer system bus, like maybe it's too much info to carry and display portably maybe then you'll have to elaborate.

If by 'bus factor' you mean communication bandwidth or capability between me and these types of devices still being fairly non-existent, that's my reasoning for expecting there will be a microchip or something that allows me to direct any mouse/keyboard movements (or their equivalent) with my thoughts. Because having to gesture hololens style or dictating everything or navigating with a single button on the side of my glasses would suck, yes.

Might want to be a little more specific next time instead of throwing out a term without context.