Dictionary.com defines a rube as an unsophisticated person from a rural area.
That definition is inherently dismissive.
Some of the most important life lessons I have learned have come from interacting with “unsophisticated” people.
In French, the equivalent “sophistiqué” means unnecessarily complicated.
To return to the word “simplify” I once again quote Bruce Lee, “Simplicity is brilliance.”
Rural life is simple in a beautiful way.