More context: the folk who went to the southern mountains were similar to the folk who went to Western New York, Mississippi, and generally westward. Many were poor compared to established East Coast folk, and they snatched up Indian land sometimes as the Indians were being led to the concentration camps for eventual removal.
Thus, when compared to the established folk of Eastern Pennsylvania, a place settled for two centuries by the time whites invaded the Blue Ridge, the guns that came out of the Blue Ridge have both different jobs and meaning. There were almost no big game animals left in the mountains by the time whites moved in. No deer, no bear, no cats, no nothin. There were ***** and boomers. And, most of your neighbors were as poor(relatively speaking) as you. A gun was not the same kind of status symbol nor of the same fashion as a status symbol as Eastern PA guns from 50+ years earlier.
However, even in the South, the closer you get to the coast, the more elaborate the guns. One of the most richly adorned of all American rifles came out of middle Georgia. It has silver everywhere.
Historical time and place has a lot to do with the different fashions of guns found in our country. Funnily enough, by the time mountain folk were actually making guns in the mountains, those enterprising Pennsylvanians had factories turning them out like Henry Leman.