With that said, I don’t think these can replace phones until they’re quite a lot smaller and lighter. And to make it worse, you’d need at least two pairs - regular and sun. Possibly three if you’re someone who regularly uses safety glasses.
Meta says they will open it up though.
That said, I'm not sure I'd want smart glasses. Being stuck on a computer for work, I try to take some time every day to be completely free of digital things. It's hard enough to do that with a smart phone in my pocket vying for my attention. I imagine it would be only harder with smart glasses over my eyeballs.
Those things on glasses and I ditch my phone immediately.