I disagree majority of the time phones are in the pocket with the camera obstructed. Microphones yes but this is way more surveillance potential.
Discussion
Surveillance in context of who ? : people who wear the glasses or the ones they are looking at ! ..
For the first category .. both are same . .. Meta can't survail you more if you are wearing glasses or carrying the phone .. cuz they anyway know everything about you :-)
Yes .. now you can be a ninja agent with a blink of an eye you can record your Barista , postman , teacher and people passing by ðŸ˜ðŸ˜ðŸ˜
O btw ... You support smartphones and care for surveillance ! That is a bit odd ..