That is not true. Public polling indicates that most people do care about privacy, but are unaware of how software tracks them, or when aware, feel powerless to change anything.
I'm sure I have a biased view, but i hear people care about privacy in the same way they care about leaving facebook. They would like to, in a purely theoretical manner, but they aren't willing to change anything about their life to get that effect. It seems like many people only care enough about privacy to click a button.
Sure some people actually remove facebook, but the overwhelming majority of people are voting that they prefer the services offered, even with the tradeoffs. Unfortunate, but seems likely to me.