I think people's idea of privacy is very simplistic and personal and relies on the disgust of a human peering over your files. Most laypeople don't have the same disgust of machines peering over their personal files that is why the weirdo video recording elicits a negative response but Meta or Alphabet doing it doesn't. Plus the fact that they "depend" on Meta and Alphabet tech makes it easier to give them a pass not unlike fans of [insert your favourite celebrity] who happily look away or justify the celebrity's bad actions.

I think people would find it disgusting, it's just very hard to know what data is being used and how and sold to whom by these companies. It's a very opaque by design.