This is exactly the misleading propaganda as it is to be expected from TED.
The dangers she brings up are about "voting get's manipulated" or the the terrible support of "J*w-Haters".
The reality this vile piece of garbage is distracting from is the fact that just by a few facebook clicks they can assess your personality to an extend where they can predict whether you are a danger to the government or a "high risk" individual for other purposes, for example higher insurance premiums or if you are less credit worthy based on your PERSONALITY and not your credit history.
It goes way beyond selling you shit you don't want. It is about predicting behavior and absolute, total control.
A website called https://illuminus.io/en/ offers already it's services.I wrote a post about it.
https://steemit.com/conspiracy/@herrleeb/they-know-more-about-you-than-you-do-yourself