It may be able blocking ads or not. But I dont think it's about tracking. NYTimes already ran a successful test in Europe where they eliminated all third party behavioral based ads and saw no revenue drop.
I think they have just concluded that the story being told that sites must engage in creepy third party ad behavior is false and that they can just handle in house.
Possibly, but my fear is that ad networks will start installing frameworks on the content servers and use fingerprints instead of cookies for unique user id
