Some of those folks seem ok in my view. The famous moonshiner Popcorn Sutton in his documentary comes over as a decent bloke & all the people who went to visit all spoke highly of him.
Of course you'll get the few wrong 'uns, what I've learned of the Appalachian Culture they mostly have family roots back in Scotland and Ireland, the history of the place is very interesting.
Where I live most of the UK look down upon us, the last few days the area has been on the BBC news as part of the "leveling up" as it's poor & post-industrial, in my view I'd trust some old woman from the back streets of Wolverhampton who's been working class all her life than someone in their mid 30's who works in media living in central London.
Some of the folks at my stepbrother's wedding, London types, 6 figure salary fit the stereo typical view so well, they didn't speak to me more than one word yet a distance relative of his wife's who was from the valleys in Wales was so nice.
I gotta go wear a pillow case on my head & burn a cross folks.