Not being familiar with all things oil and gas would be pretty common for people not living in areas where it is processed or compressed. It’s much like a Linux enthusiast being upset at Windows and Mac users not realizing there are other OSs for computers. Might not be in their realm of thought.
Natural has been a wonderfully misleading marketing term for food products too. There’s no regulations in the US on what one calls “natural” ingredients. Most people mistake it for being like organic just as intended. Natural just sounds good. Unfortunately radioactive material can be natural too.