Do you have an example of these people, or what they're envisioning? Are they expecting ready player one type glasses in the next 10 years? I think there will be different classes of devices: everyday wearable AR more than XR, and screen replacement/heavy compute XR, with vastly different experiences.
> lots of incremental improvements
As should be expected. This is the only way tech has ever progressed, without exception. The only perceived exceptions involved shifting existing tech into a space that it wasn't present before.
> from v1 to v10 or even v15.
I think it's a little more than that. I think most would agree that it's not usable, in its current state, for a screen replacement, or as a primary computing device. Even Apple suggested so in their announcement, saying something like "short trips". I suspect that V15 will be the primary computing device, for most people. If that ends up being true, that's significant.