Well they will start caring when their teen with image issues starts getting targetted beauty ads[1], or when they get pregnant, want to abort, and get directed to an anti-abortion center instead[2], and afterwards they get served "abortion reversal pills" ads[3].

Or when they are hit by any other privacy fuckup like that.

[1] https://futurism.com/facebook-beauty-targeted-ads [2] https://www.bbc.com/news/health-61320202 [3] https://tech.yahoo.com/general/articles/facebook-made-money-...