And you are absolutely correct that the enthused haven't used this device, or even heard from a non-Apple employee that tried a beta. I am hugely concerned about long term comfort, particularly in the eye fatigue realm, for instance, and will be watching to see what the sentiment around that is.
If it were many other companies I would honestly be much more skeptical about it, but I mean Apple has a pretty good track record of actually delivering products that meet or exceed their promises. And they really promised the moon with this reveal.