Their point is that oil will only continue to have value if it's kept scarce, and that because there are viable and growing affordable options away from petrole

Their point is that oil will only continue to have value if it's kept scarce, and that because there are viable and growing affordable options away from petroleum where there wasn't 10-20 years ago, we will have both a tug of war between producers keeping it in the ground to keeps prices high while their net market shrinks consistently until we're really only left with oil utility where the economy of the resource makes sense (if any). The energy sector will have moved on to the most exploitable sources of power in whatever shape that looks like due to innovation.