Veracity of a news source should *always* be open to question. No one here believes BOTH CNN and Fox News.Perhaps rather than attacking the messenger, comments could be directed to the content.
Having a source with known flaws does not help your case. What is said may be 100% true, but one has to wonder what might be hidden.
Classic example: journalist in a series of articles accuses a manufacturer's representative of various shady activities, but does NOT reveal the person was his ex-fiance.
Facts are like bikinis; what's revealed might be interesting, but what's hidden can be vital.