This really comes across as if you just keep shifting so that you can continue finding something to complain about. It’s ok to just not like having your camera on man. Not everything has to be the kicking off point for a sociological or anthropological study.
Backgrounds visible? It forces you to have your space display worthy!
Backgrounds blurred? Everyone knows your place isn’t display worthy and thinks you’re a disgusting pig!
Company provided background images? Corporate endorsed removal of individualism!
What you’ve touched on here is part of the intent. Not that they want to erase individuals, but that in general a more controlled corporate image is seen as more professional.
If you want to talk about how/why that’s a thing, be my guest, but that has nothing to do with video conferencing. Work dress code and even work uniforms have existed for generations.
OSINT is the term you’re looking for.
Edit: and this particular person was apparently talking about buying the data off signalhire.
OSINT usually consists of collecting all of the publicly available data on a “target” (person or company usually) and correlating it all together to reveal things not explicitly public (or at least not all in one spot). “Open source” intelligence. Term is used by military, intelligence agencies, and pen-testers.