So Neal Stephenson wrote a book about this - at least the good half of the book - https://en.wikipedia.org/wiki/Fall;_or,_Dodge_in_Hell

It's 20 years in the future where facebook and similar services are much, much worse. Wealthy people pay for editors to remove misinformation from their feeds. And the country gets bifurcated with coastal elites having access to editors and flyover country ("Ameristan") has turned into a conspiracy plagued wasteland.