That is part of why these brogues exist.
Until modern times, these locations were rather remote, and therefore they ended up basically developing their own language. As 'progress' moved into their area, plenty of locals found little desire to become so 'worldy'. However, as their kids grew up, those kids left the area and returned with 'outside' influence. The local languages and traditions are fading away these days. There are people who will never go to Rodanthe for Old Christmas, or who will remember the Armada down close to Whalebone Inlet. Things that I remember are disappearing or gone now. That does not mean the end of the Outer Banks, of course. It just means that progress is happening, and that progress sometimes runs over tradition.
Which is not a good thing, as far as I am concerned.