Hmmm.
You can measure the time I've lived in the South in decades, which includes two states and time spent in all eleven of the confederate states. I have a deep Southern drawl. I did not attend a prep school in New England or any Ivy League Universities like the current President...
But by all means I defer to the expert with one year in Columbia.
I've lived in the south for decades as well, having first moved to North Carolina in 1977. My wife grew up along the NC coast, we were married in Belmont, and my daughter was born in Charlotte. I've also moved around a bit. I have a southern drawl when I speak to others from the south (which becomes a NJ nasal accent when I talk to someone from the northeast, and midwesterner twang when I talk to someone from the midwest, and a B'more accent when I'm talking to someone from the mid Atlantic).
Maybe I'm too close and can't see it, as Mikey says?
I love it here. I really do. The food is wonderful. The people are friendlier than most any other place I've ever been (Canadians are the closest). I love a great deal of the culture (no one from outside the South truly appreciates college football, grimace all you like - but it is true).
But there is a duality in the South as in no other place. On one hand a person can be extremely friendly and hospitable, on the other they may spout something as hateful as you've ever heard. Race is a big deal here and those who say otherwise are simply not telling the truth or they've never left the comfortable confines of the suburbs.
I don't know about California, New York, or elsewhere, but people here still purposefully move to all white school districts. There are people who still hate to see mixed racial couples and they are not afraid to let you know about it. I used to play basketball with a county judge's son whose father kept racist (klan) memorabilia in his garage. I've seen campaign ads, back when immigration was a big deal, that blatantly portrayed Mexicans in a terrible, cartoonish light.
So yeah...somewhere just underneath the surface, race plays a major role in Southern life. Perhaps it is a lot to expect for a region to change so quickly.