

It very much is a myth. The Dixiecrats didn’t become Republicans. They remained Democrats and mentored the next generation of Democrats. Al Gore Sr was a flaming racist and his son almost became president. Some like Robert Byrd acted like they were distancing themselves from Democrat hate groups like the KKK, but Byrd’s voting record still shows he clung to his racist ways by systematically voting against black appointments, especially non Democrat ones.
Also, you don’t found a new chapter of an organization you don’t believe in and Democrats still preach white supremacy. They merely call it “white privilege” now.
I look at it as absurdist political humor, just like when they were making fun of Al Gore with ManBearPig and Hilly Clinton with The Snuke. Then there was them roasting the shit out of Saddam Hussein in the movie.
Rehashing Saddam Hussein as Trump was a bit lazy. They could have done better, but it was still entirely unexpected.