I think that's true in principle, but in practice there are going to be two kinds of smart glasses users; extraordinarily annoying kids or you adults acting annoying in public so they can post videos to social media, and then normal people who have no clear sense for how much they're violating the privacy of those around them, and just like cool tech.
Very, very few users are going to be an interesting or valid use case -- eg: someone who is using them to assist with a disability, or for research, or something.
Even most dash cams don't stream to Meta -- they just record the last _n_ hours and you need to know to save off the video if you're in an crash / incident. In other words, most of the time no privacy is violated, and the only potential privacy violation occurs during an incident.
Even policy body cams, which I wholeheartedly support, have some pretty strong downsides: currently, if you're at the end of your rope, having the worst day of your life, and in your dishevelment turn a speeding ticket into a BATLEO, you're famous forever for being a lunatic. Maybe the rest of the time you're a good person, and you can learn from this and move on. Except now you have a permanent albatross around your neck. This is a secondary penalty that the justice system did not intend, and has no answer for.