It most certainly is.
> The appeal is to have a diet more in line with our evolutionary past.
Our evolutionary past is full of death and disease from what we ate. Humans have been drinking alcohol for centuries and there is strong scientific consensus that it causes cancer. Just because it's what humans have been doing doesn't mean it is safe and we should continue it.
> A) derive it from something humans have been eating for hundreds of thousands of years and that a couple studies have confirmed is probably safe...
> B) derive it from petroleum (as current US yellow food dye is) that a couple studies say is probably safe.
You say "derive it from petroleum" like they pump it directly from the well into your food. Petroleum is composed of hydrocarbons, it's very useful and is used in a lot of different applications. Just because you don't understand something doesn't mean it is dangerous.