Maybe you're not familiar with the practice of journalism where anonymous sources are routine, and have successfully uncovered a great deal of misconduct by governments. Reserve skepticism of course, but dismissal of a routine practice with a proven track record is not justified.
Right, and these claims are being made by an award winning journalist with a proven track record who has a source. That deserves more credence than just "anyone" making any claim. Not enough to accept it as truth, but far more than claims that can be outright dismissed as you initially claimed.