We are practically neighbors. Brookneal is a nice area. We are in Burkeville.
Folks here may be unsophisticated, but they were raised with the most beautiful manners. When they find out we are vegetarians, they normally hesitate and do a quick mental calculation to try to remember if they have ever said anything offensive, if we have ever said anything strange or critical, and then a quick appraisal to see if either of us looks terminally ill. Since normally none of those things are true, they continue to look for more common ground. We were tickled by the delicately worded question when we first arrived: "Do you have the time to attend church?" The DC area could learn a thing or two about tact from southsiders.
Your observations are consistent with what we've found. People are very quick to lend a hand, and they found out early that we are quick to help out, too. We have made some very good friends who share our interest in growing better food (we have family milk cows, as well as the chickens and garden).
I had to chuckle at your clay comment. When we first arrived, I mentioned the red clay to one of our neighbors and the fact that it seems to be everywhere. His dry reply: "Yup, but stuff grows in it." Unbelievably, it does. It retains moisture very well and holds up under livestock, so the pasture here is much more resilient than what we were used to. Gardens are a different story (as you know). We add a lot of manure, but they still take more work.
Where are you from originally?