The concept pof the "Good Ol' Days" exists everywhere, and so far as I can tell, is inaccurate everywhere you hear it.
People remember the best parts and forget the worst.
Those who still lament the end of the times before the Civil War in the South forget that the old plantation society, which was a paradise for the few that owned the plantations, was a society that was intolerable for most of the slaves, and not much better for the vast number of poor Whites who had to compete with forced labor.
There was a whole lot more of "Cold Mountain" in the Old South than there was of "Gone with the Wind".
The period of the Confederacy (1861-65) was even worse, because of the fighting, the dying, the slaves running away and the entire society collapsing. But there are still a lot of jerks who want to celebrate it with official "Stars and Bars" Confederate license plates on their cars.
Of course, they are free to just buy a Stars and Bars bumpersticker.