iphone 1 - was laughed at by a lot of people. Took 2 Generations 3gs / iPhone 4 to become mainstream.
iPad 1 - Was a big disappointment. It's just a big iPhone - not a Mac.
Apple Watch 0 - Was underpowered and slow. Was only bought by a few people.
All went on to massive success.
The thing with this... It's actually a MacBook without a screen. I am buying one so I can do work on multiple 50" screens.
Gen 2 / 3 will be much smaller and lighter. And by gen 6 will be True AR Glasses. with Waveguide lenses or Direct eye projection ( this is already a thing not Scifi )
I've looked at all the developer information and documentation and that's the way they are pitching it over full VR, though it can do that too - they are not pushing it as their future is normal glasses - no screens - real world vision and overlaid AR and eventually will looks something like this.
Guarantee that one of the first apps will be Beat Saber that will work in VR as it does on the Quest but also AR.