I was in engineering school back in ~2012 when Google Glass came out. One of my classmates got hold of a pair when they were still quite uncommon and wore them to an extracurricular club meeting. Within minutes someone made a comment about him wearing the "creeper" glasses and asked if he was filming. He never wore them to the club again. I just don't see a world where that doesn't happen with Meta glasses.
It's strange to me that that's the line society seems to have drawn in the sand. Body cam, no problem. Doorbell cam, practically universal. Body cam worn on the face? No way. I wonder why.
I think the difference is that these cameras are relatively concealed, and can be used to record every interaction, even in pretty intimate/private settings. Yes you could do this with a cell phone but it would be pretty obvious your recording if you're trying to get more than just the audio of an interaction.