Is it true that natural peanut butter splits in cookies? I was watching a video recipe about peanut butter cookies. The maker mentioned that you shouldn't use all natural peanut butter for making those cookies, because the oils would make your dough split. You should use the other kind (I have no idea what this is).

Is this true?

My peanut butter contains these ingredients: peanuts, vegetable oil, vegetable fat, salt. I'm assuming this isn't 100% natural peanut butter? Is it only natural peanut butter if it contains only peanuts?
I've made peanut butter cookies with various "all natural" peanut butters, containing no extra oil/fat, just peanuts and possibly salt. They didn't split. I suppose the recipe you're looking at could be somehow different but it seems really unlikely. I haven't even seen splitting in cooked sauces using these kinds of peanut butter, along with plenty of other liquid.

As far as I know, the main thing meant by "all natural" is that it doesn't contain other oils like yours does; those are generally used to replace some of the peanut oil, so that it doesn't separate while in the jar. But separating over a long period of time in the jar is a far cry from splitting in cookie dough where it's mixed with plenty of other ingredients, and probably sits around for a few hours at most before baking.