When people talk about AR glasses, I think there's two end games: glasses that you would wear all the time, and glasses that you wear while you do task X, and that these will not the same device.

A lot of confusion I think comes from people discussing them as one thing.

Glasses that you wear while you do X: Think of the HoloLens type of device. It has all the bells and whistles the tech currently has. This means that they're very capable but too heavy and power hungry to run for the whole day.

Great for when you need to do X at max capability.

Glasses that you wear all the time:

They're super focused on input + output (display, audio) but substantially impaired elsewhere. Think of the Network Computer - the work is done elsewhere (cloud, phone in your pocket) and the glasses are the terminal.

Also the use cases are fundamentally different for these two devices: always on glasses won't be -the- device to do what the high-end VR/MR devices are doing nowadays.

They'll focus on different things.

Less immersion, more augmentation and context-sensitive functionality.

You will likely be disappointed if you judge them against what current devices are capable of doing, but you should more judge them against the things they will be capable of doing that current devices are not - by the fact that they're with you and reacting to the real world.