That’s a good point about the iron. But I would like somebody to go and say: Old rancid fats, half burned and fused with iron and other fats, are not a health concern, or at least not in those quantities. Haven’t seen anyone even discuss this topic.

I can easily see how it might not be an issue, given the amount of rancid fats and burned stuff we all consume, but it would be nice to have this confirmed.