We're still a long way before it being a viable option to ditch all other devices for. If they could get it working as an AR glasses wirelessly reliant on an iPhone then that would be the thing that makes it go from weird overpriced useless product to an actual useful device.

Getting rid of the phone completely though is a whole other issue and we're nowhere near being able to ship anything with enough computing power and battery capacity into a form factor as light as standard glasses.

The whole chunky VR headset thing - no, that's not taking off as a thing people will wear all day.