Semp, you can ignite gasoline with fire, trust me. You're right, you can't do it with a cigarette ember, you need combustion. We went over that.
Look, you guys have pretty good grip on how oxidation works, which is what fire is. But your application of that is hilarious. Technically, wood doesn't burn, it's a solid, cant oxidize fast enough, therefore a log cabin is fireproof right?
If shooting gas tanks with incendiary ammo doesn't start fires then the history books have it all wrong and AH has some serious issues with it's damage model.