Quite the strawman construction there...precisely nobody has ever claimed all methane is biological.
Thus the only question remaining is: -- why is that fact ignored when we discuss the formation of hydrocarbons on earth?
There is a vast, vast, vast, vast difference between Methane and the hydrocarbons in petroleum.
So the people that sell hydrocarbons claim. - Isn't that amazing. -- Gold however explains in his book how biological activities can form petroleum from methane, deep in the "hot biosphere" .
Quite the strawman construction there...precisely nobody has ever claimed all methane is biological.
But you fellas claim all petroleum is scarce because it's biological. - A self serving argument when you sell the stuff, no?