It sounds to me like the biggest issue wouldn't be witches so much as other heartbreakers.
This initial equillibrium of multiple competing heartbreakers has an extreme tendency to collapse into a single winner and nobody else with noteworthy mana, a situation where one heartbreaker eats all the...
My experience with Campbell was the opposite, I found his book both accessible and prosaic, as far removed from a boring textbook as possible. I remember pleasant anecdotes, colorful descriptions and interesting anthropologic accounts, like the story of the Pueblo water jar boy or the old hermit...