I think reputable organizations risk their integrity each time they quote an unnamed source - this is the basis of the public's acceptance of unnamed sourced.

I imagine NBC has a process for using unnamed sources; I know the NYT has one and has written about it in the past.

Thus, I recognize your frustration but do not see the link between 4Chan and a well-known news organization. You might raise the issue of the Vanity Fair reporter's lawsuit, to which I would suggest not reading VF if you no longer believe in their integrity.