Came here to say exactly this. Someone wearing this in public should be considered as a brazen attempt to record others en masse without consent. In fact, it's worse because it's data being harvested for and siphoned to a third party, in real time, entirely for their enrichment.
We already have enough mass surveillance devices. But I suppose two arguments could be made (1) we don't need more of these, or (2) peak surveillance has already been achieved, and adding one more doesn't make any difference.
I think this is a reasonable place to draw a bright, red line. It'll make us look unreasonable if we act unreasonably. What's really harming us is that we don't have a formalized value system from which to engage in rhetoric, nor do we have a standard rhetoric which people can easily engage from and against.
We already have enough mass surveillance devices. But I suppose two arguments could be made (1) we don't need more of these, or (2) peak surveillance has already been achieved, and adding one more doesn't make any difference.