"All RPGs are descended from wargaming by virtue of D&D" is a trash argument. Full stop.
Seriously, I have a treehouse and some toy dinosaurs who will fight you on this.
@megueyb I mean yes, but it's just for the fact of the word "All" used in front of rpgs. I would say "most commercially available rpgs", and even then much of the joy of rpgs is that fertile middle ground, somewhere between rules and imagination. There certainly is a strong element of a "single-unit wargame" in many rpgs, but it's not the only element, nor is it in every single rpg. My issue is with the word all.