That’s Howard Kurtz’ claim. In his piece about the NLMSM, Michael Flynn, and the “leak” that led to his resignation as President Donald Trump’s National Security Advisor, Kurtz said that The Washington Post story that began the thing was “good reporting.”
Then Kurtz said this:
[T]he Post story would not have been possible without the cooperation of nine unnamed senior officials who furnished the leaked information.
The Post story was built entirely on those unnamed persons. Unnamed. We don’t know there were nine. We don’t know they were senior or even officials. We don’t even know they exist. I have to ask: what part of “unnamed” is unclear to Kurtz?