I think it is clear that the public cares about privacy but only when they are fully educated about what a given platform is doing. The public is not reading the privacy policies, or looking at the app permissions or do anything really to educate themselves on all the ways Google, Facebook, Twitter, etc are abusing their data
But if a high profile news story comes out about some privacy issue they are outraged about it.
This shows a education / knowledge gap, I dont know how to close it, or if it can even be closed but to say "no one cares about privacy" I believe is false