Why does this matter? Pornhub is addictive, probably on a much deeper level than Facebook. No one criticizes Pornhub. Reddit is addictive, no one criticizes Reddit. Videogames are addictive. No one says we should ban videogames or take legal action against them. Even if people do criticize these things, they don't criticize them the same way they criticize Facebook.

I think FB has added more to the world (wealth, high tech jobs, open source technology, places for people to organize, ways for people to connect) than it has taken away in the form of FB addiction and manipulative ads.

The masses have always had their bread and circuses. I don't see why a new digital variation is any worse than existing forms of mindless entertainment.