Incredible amount of negativity here. Huge kudos to Meta for breaking new ground and doing a ton of R&D/M&A to get to this point. Once MicroLED comes on a little further and the form factor shrinks this could be the next consumer electronics platform. Silicon carbide is really interesting, we need high RI materials to make this work. Hopefully glass 3D printing or similar will make cheap, Rx waveguides possible.
It's FB. They're not popular. I wouldn't touch it with a barge pole, because I expect it will be absolutely stuffed with user surveillance.