Any deviation among the mainstream media would lead people to question the news, so there is no deviation. From Jon Rappoport at lewrockwell.com:
The rise of television news, and its power over the mind, necessitated an agreement among the major networks:
On most issues, the networks would have to mirror each other’s coverage. Otherwise, the audience would experience an unacceptable level of confusion and cognitive dissonance.
This principle of agreement was basically about the rules of propaganda—and nowhere was it more evident than in matters of medical science.
For example, suppose, recently, the COVID PCR test became an occasion for disagreement among NBC, CBS, ABC, CNN, and FOX?
Three networks fell into line with the CDC and the WHO in claiming the test was accurate and meaningful, while the other two strenuously reported on the irreparable and fatal flaws in the test. (I’ve exhaustively detailed those flaws in many articles.)
The network dissonance would upset a huge apple cart smack in the middle of COVID “science.” The public wouldn’t know where to turn.
Therefore, the truth of the matter had to take a back seat to conformity. All the major networks robotically echoed the CDC/WHO.
And the network anchors had to sell the PCR lies. Lester Holt (Lurch/ the Addams family); David Muir (Sears underwear model); Norah O’Donnell (student council president); Wolf Blitzer (“smart bombs went right down chimneys in Iraq”); a collection of shiny suits at FOX; they all had to pretend they’d looked at more than the opening lines of public health press releases.
The guiding light of network news is unanimity, and social media have adopted that m.o. as well.