That’s what I why trying to say. They don’t eat the meat as kids and they die young, hence why prion disease isn’t a huge issue. However, I bet it still affects some. And, when it does, they just think it’s because of the “male witches.” They wind up eating the “witches” and making the problem worse.

Edit: I wanted to add that I think it’s interesting that they see the brain as a delicacy. I wonder if it’s because the killer gets to keep the brain (and therefore it is rare/sought after) or if they actually like the flavor/texture.