TV is one of worst forms of media out there. It is practically the definition of mind control and although there are multiple channels, there is a strange sense of groupthink.
This is similar to the Murray Gell-Mann amnesia effect, where famed quark discoverer Murray Gell-Mann opens the newspaper and reads a physics article. He is disgusted at the lack of research, the blatant misinformation, and random theories disguised as respectable reporting. Then he flips to another section - like politics or war - and reads it as if it was somehow more accurate than the nonsense he just read.