Also irrelevant. As humans, we have no choice about which ancient organic matter got turned into petroleum.

On the other hand, we do have a choice about whether to take petroleum and refine it to make gasoline, or whether to take petroleum and other energy resources to grow corn and make it into ethanol. Putting one's thumb on the scale by neglecting to account for *all* of the energy inputs to the ethanol making process will make it impossible to correctly choose the most efficient solution.