I don't know what the use case is for these?
I don't ever hear anyone outside asking Siri to do anything via their iPhone, Apple Watch or AirPods - they tend to feel a bit embarrassed talking to a device in public. Having to control these glasses via Siri while you're outside where you can make the most use of them (maybe a maps overlay) will be just as embarrassing. On the flip side, if you're in your house you aren't likely to need many of the things that the glasses would offer, like that map overlay.
Receiving a message and seeing it in front of your eyes feels like it would be cool, but how would you reply? Using Siri? Who's gonna do that while they're in a queue for their coffee? It's embarrassing.
I think the only people who will have the confidence to speak out loud in public are the over-confident trainers on Fitness+ (which is a great service, by the way).
I consider myself an introvert and I have no qualms about using Siri in public. I don’t even have to speak loudly either. Simply being my phone or watch close to my face and talk softly. Siri usually picks it up.
I am guessing the primary draw (at least initially) of Apple glasses will be having a screen that is as wide as one’s field of view. The main advantage will be for passive consuming of content that does not require any input from the user.
For example, turn by turn map directions. Airtags could also come in handy here, allowing me to quickly see where my keys or bag is by overlaying a giant arrow or balloon or some other icon right over it. Perhaps it could even work with find my friends to let me quickly see where my friends are in a crowded mall?
Or app clips letting me quickly pay for parking without having to take out my phone?
AR is another possibility. Previously, I have to hold up my phone in front of me. Now, it’s right in front of me, for as long as I am wearing my glasses, without me having to raise a finger.
And since I am already wearing glasses, there’s virtually no opportunity cost to me.
I see the potential here for Apple to usher in a new paradigm of personal computing.