I think we're not giving the general public enough credit. These discussions always seem to come down to "no one cares about privacy" or "they care but they're idiots." I think many people care about privacy
and generally understand the issues, but are making conscious trade-offs that make sense for them.
For the vast majority of people—who are boring, non-activist, law-abiding citizens—the value they assign to privacy of things like name/face/products they're interested in is nonzero, but very low. They know their name/face, along with far more sensitive information, is already in a lot of databases that matter more than anything some random app developer can do, and they get some greater value from the marginal privacy impact of that same information ending up in one more place.
There's a good bit of research to support this. For example, there is a study showing you'd have to pay someone on average $1,000+ [1] to give up their Facebook account for year, suggesting that's the value they assign to the service. At the same time, if you ask them how much they'd be willing to pay for an ads-free, more privacy conscious version of Facebook, studies show only a small fraction would pay even $15/month [2]. In other words, people are making a conscious assessment that their privacy is less valuable than the services they can get by giving it up.
We make these kind of trade-offs and decisions every day. It's much the same reason people can be both deeply concerned about child labor in the Global South, but still make the decision to buy the cheaper version of a product rather than the one they know is ethically sourced, even if they could afford the latter. These decisions certainly have societal impacts that are worth contemplating and being concerned about, but it's wrong and infantilizing to simply dismiss people's conscious and rational (for them) choices.
[1] https://journals.plos.org/plosone/article?id=10.1371/journal...
[2] https://www.vox.com/2018/4/11/17225328/facebook-ads-free-pai...