You dont have to take sides on the political seesaw to understand that mainstream media is becoming more irrelevant to large sects of society. You might have a take that its a bad or good thing.. but it is true. There is no longer a vast mono-culture, and with it's loss, a fractured sense of reality amongst the inhabitants.
Lack of mainstream media doesn't mean the death of monoculture - were seeing a huge resurgence in populist messaging over the past 10 years. Its aided by the distributed nature of the internet.
These are large disparate groups that are rarely exposed to others thoughts and understandings. It is wholly different than the media giants and their control of monoculture prior. It’s rare that we even ever have a tv show that a majority has watched together.