You speak as if arguing for the sake of it is a wrong thing to do, eloethan. I call it tackling ideas that I'm uncomforatble with. I like challenging ideas and think it's a good thing to do.
I still don't think the cartoon is about people except indirectly. I think it's about the effect of an earthquake on people: reducing them to a messy mush, so to speak. Which is exactly what earthquakes do. Yes, I am being blunt. I don't think it's a step too far.
Earthquakes hurt real people. Cartoons don't. Bombs hurt real people. Drawings, cartoon or otherwise, of bombs don't. And so on, ad nauseam.