Conservatives haven't spent decades opting in to getting all their information from Fox News and AM radio hosts spewing hate because it's more accurate.
People want to consume what agrees with their beliefs. As long as Americans continue to believe they are a magical place with magical people that you can't compare to anywhere else for advice, that the Civil war was fought over "state's rights", that we disliked the Nazis in the 1930s, that certain TYPES of people are intrinsically better than others, that we are a "christian" nation, we will never get better.
Hell, even media made for people who don't actively hate LGBTQ types STILL treats the civil war like just some small kerfuffle and it's fine that two brothers on opposite sides of the war just needed to reconcile and love each other and that's totally fine even though one of them signed up to fight and die for a regime who's entire purpose was the continued enslavement of millions of black people for the crime of being born black.
A significant portion of our country is outright TAUGHT IN SCHOOL that the civil war was a war of "Northern" (read: those goddamned coastal elites) aggression.
The south fired the first shot for fucks sake.
Why do you think those people would EVER choose to consume news that tells them: "Sorry, you've kind of been lied to for a long time and actually your ancestors were kind of bad people doing kind of bad stuff and also uh we genocided the indians and also the Nazis were pretty popular here and holy shit you should see the horrible stuff we did under the guise of 'science' when we discovered Eugenics let us claim black people were inherently inferior. Because their skull was the wrong shape. No I'm serious"
How do you get someone to believe something they absolutely do not want to believe in and they don't even respect the primacy of material fact like "The southern states literally said they were fighting to maintain slavery IN THEIR SUCCESSION DOCUMENTS"? You can't force another human to respect and understand reality when they spend their entire existence and have built their entire worldview around "No, the people telling me my country did bad things in the past are actually the enemy"?