NOT my experience at all
When most of us say Southern I think we refer to the states south of the Mason-Dixon line. Of course, we had border states that stayed in the Union and midwestern states were originally settled from the Ohio River often from Virginia. Those states have strong southern influence.
When we say Southern, I think mostly we refer to Southern manners and courtesy. Those are the aspects Southerners have so much difficulty adjusting to when they move into the North. Especially New York City famous for its in your face style.
We enjoy many southern traditions including Southern hospitality and many great foods.
No doubt plenty of families have lived in the South for generations and value those traditions. Notherners moving in dilute those efforts, and therein lies the conflict when they object to Southern ways.