Let me make it clear: I did not bother to read the article.
The headline says that Facebook bans advertisers pushing Google+ follows. Obviously, no one reads anything but the headline. News by a news, and the audience spreads the news as a fact, really.
It's _very_ harmful for Facebook.
Few days ago there was a meme that Mark Zuckeberg has stepped down. It was a rickroll. Interesingly, it surprised me. After a minute, I've realized that, actually, I _expect_ him to resign. Google+ is _that_ good.