He was "trying" to prove that this:
was wrong. And he succeeded. You *do* absolutely reduce stockpiles by logistics bombing. Now you're trying to move the goalposts by saying it's not effective. Well, maybe it is and maybe it ain't, but that isn't what you asserted as true and were proven wrong about.
You smugly told him to "check with references", and he did. Game, set, match.
Not so. the issue at hand was whether you can destroy the german supply stockpile in berlin by logistical bombing. Prove that and i stand corrected.