It is actually pretty clear you are correct, if you look at how the whole commercial and government spying industry has developed. It's not the case that people aren't aware of it, but most really and truly don't care.
I think people care, its just that they feel powerless to stop it. Kind of like "yeah, but what are yah gonna do?" I guess the answer would be to use cash for everything, but for some people they don't feel safe or for whatever reason there's a combination of things that outweighs the lack of privacy.
What if inflation exists to dissuade people from just putting cash under their mattresses... so the government can better track their spending?