If you consider the addition of indoor plumbing and reduction of outhouses a "degrading" of quality of life.
Ha! I couldnt help it. I am a yankee moved south (NC). And I like to point out to natives that NC leads the nation in outhouses. Yes, its true. NC leads the nation in outhouses. And SC is jealous!
My mother's ancestors moved to South Carolina from Massachusetts before the Revolutionary War. She was about as Southern as you can get.
My wife's grandmother moved south from Iowa around 1900. They never did get the Yankee out of her.
My ex-brother-in-law moved from Ohio to Atlanta in high school. He's the biggest Bubba you ever saw--up country drawl and everything. In fact, he was the model for a character named "Bubba" in a book I just finished reading. (He acclimatized quickly.)
Once you get the Yankees down South, get them to relax and acclimatize--basically, get the Yankee out of them--you can't tell them from just regular, normal people.
It takes some longer than others, and the process is not pleasant.
What is it that the "transplants" are doing to speed the degradation, and how are long-time residents attempting to fight them?