This is my question too. I get moderating things that people are posting. Being not familiar with the device and how it works, I'd assume that all footage is posted to the user's cloud account even if not publicly posted. This being cloud storage, Meta is "moderating" the footage to ensure CSAM or other restricted footage type is not being stored on their (Meta's) platform. That's my very generous take on it, not that I believe it
The article itself is ambiguous on this point: "At the time of the publication, Meta admitted subcontracted workers might sometimes review content filmed on its smart glasses when people shared it with Meta AI."
That could be moderation, or it could be labelling new examples for training/validation
This feels like an instance of weasel words. One can scarcely imagine any reason to do content moderation over people’s own private and personally consumed data.