While I do agree with the general point about not judging experimental devices too harshly you're making an assumption there that there is an application for general purpose, wearable smart glasses.
I'm really skeptical. I did some work with Google Glass back in the day and irrespective of the way it looked it was really socially jarring. You could be in a conversation with someone and see their eye drift upwards to read whatever notification arrived on their device. It felt rude. At the same time who can blame them for looking at the flickering message an inch from their eye? Snapchat sunglasses felt socially jarring in a different way: whenever you were wearing them you were constantly pointing a camera at someone.
There's something very fundamental to the nature of these things that makes me feel like they just don't work. I can see them being incredibly useful in professional contexts (IIRC there were trials with giving Google Glass to surgeons, makes a ton of sense) but as a general thing we're all going to be wandering around with strapped to our faces? I dunno.