All true, but Facebook is unique in its reach. It has tracking bugs on far more websites than almost any of these other ad services. It has specific personal information about billions of people, including their social network, their private messages to friends, their exact relationship status history, photos, videos, voice recordings, location information, including lots of such information for hundreds of millions of other people who have never consented or even been given the opportunity to consent. It's the biggest, most intrusive database of personal information in the world, and it sells access to that data in order to serve poorly targeted ads (which honestly are a scam on their actual customers as well). And their entire business model is premised on this leaky bucket--in order to allow sales of tightly targeted ads, they also are knowingly revealing personal information to malicious parties who can and have and will continue to take full advantage.

So sure, there's an entire industry built for this, but Facebook has some truly unique properties that make it light-years more dangerous than your typical ad network.