NBC, CBS, ABC are available to every human with the most minimal television sources in this country. They're watched by the super-majority of the nation in some capacity each week.
CNN is available on essentially every minimum cable/dish/streaming package in the country. It is broadcasted in airports 24 hours per day.
These 4 media sources present their version of the news in extraordinarily biased and often misleading ways. To just accept that as "no big deal" simply because Fox News and the New York Post exist is an illogical equivalency.