I think it's more human social dynamics. A human taking your photo is an active action, probably a dominance one on top of that, and a lot of human social instincts kick in.

A faceless computer, doing it in the background environment outside of your perception unless you really dig in under the hood triggers none of that. It's the same reason why most humans are not anxious about the footprints they leave in the sand on the beach, because it feels about the same.

A lot of the rich and powerful understand this dynamic well, and use environmental stonewalling to say no to people vs. a direct human interaction.