Most of Nashville Metro and surrounding counties are actually transplants or children of transplants. Once you go to a county that doesn't border metro Nashville the culture and accent change tremendously.
Everyone in the area is aware of "outsiders" and resents it to some degree.
I'm a young SWE from TN. I can't compete with SWE's from the coasts who have immense savings up on me and they're buying up all the homes.
SWE's who are 40+ in the area immediately bought brick 4 bed homes in the burbs in the nicest part of town when they got hired 10+ years ago. SWE's closer to 30 who are local are just able to buy an apartment if single income.
However it's a huge tide, this money coming in, the issue is most locals don't have ships to ride it.