They aren’t directly connected to a social network and promoted with vast marketing resources however.

I remember playing with one of these about 10 years ago that looked like a car key fob, it recorded somewhat subpar footage in a weird format to a microSD card. A neat novelty but not very practical to use unless you really had a need to do covert surveillance of something, which most people don’t.

However if it’s made to be effortless to push watchable footage to social media, and people are heavily encouraged and incentivised to do so and it’s a different proposition.

I think it is just a matter of convenience. Very few people buy lasers to aim them at airplanes. Give everyone a laser and you'll get a thousand reports of people aiming lasers at their plane.

Those at least don't automatically sync to Zuck.

People aren't a fan of those existing either, but not much you can do about it. At least, you can assume that it's only a tiny fraction of people who own these devices, let alone carry them around, ready to go.
With these glasses, more people will own them and will have them ready to go, on their nose.

Those cameras only record locally.

These glasses presumably upload every frame to corporate data centers to be cataloged and used to profile the people in the images.