Eroding Trust in Media is Classic Totalitarian
I highly recommend reading Don Moynihan's latest post, The Trust Trap
The ideal subject of totalitarian rule is not the convinced Nazi or the convinced Communist, but people for whom the distinction between fact and fiction (i.e., the reality of experience) and the distinction between true and false (i.e., the standards of thought) no longer exist. — Hannah Arendt
Fomenting distrust in media is textbook Firehose of Falsehood, the Russian propaganda doctrine identified by RAND researchers in 2016.1 It's a modern evolution of Soviet-era dezinformatsiya (disinformation) and a pillar of active measures in general. Steve Bannon brags of “flooding the zone”, as if he invented it, but Hannah Arendt had them pegged way back in the 50s when she wrote The Origins of Totalitarianism: "The ideal subject of totalitarian rule is not the convinced Nazi or the convinced Communist, but people for whom the distinction between fact and fiction (i.e., the reality of experience) and the distinction between true and false (i.e., the standards of though) no longer exist."2
Christopher Paul and Miriam Matthews, The Russian "Firehose of Falsehood" Propaganda Model. RAND Corporation, 2016.
Hannah Arendt, The Origins of Totalitarianism (New York: Harcourt Brace Jovanovich, 1973), p. 474. Note: The quoted chapter, "Ideology and Terror," was originally added to the 1958 expanded edition.