"Ad hominem" is a great defense used frequently people with bad reputations for serially lying and misleading. If someone is a repeat offender of passing along misinformation, what they claim should be discounted regardless of whether one likes the claims or not. The people associated with this story have shit reputations and the article rests on anonymous sources. It may not be wrong, but someone would have to be a fool to ignore the credibility and reputation of their sources.