Regarding the "do not be encouraging people along your way of thinking" line- we all remember that some of the most zealous witnesses also have the most wacky ideas on health care. From carrot diets, to magnet treatments for cancer, to multi level marketing scams to sell you one form of snake oil or another.
I don't think the guys in Brooklyn are worried about someone encouraging jogging and eating salads- because no one would dare offer that type of balanced advice (its worldly!!!)