With a box stove or woodgas stove you have containment. And in places where making fires is prohibited (most places) I'd use a ground containment of some sort too, like aluminum foil or an expendable wooden plank (as a woodgas stove will burn drill through wood)

Making fires with abandon is where the ultralight way of tour goes far over the limit of irresponsibleness, selfishness and general idiocy. If you don't want to carry a stove, don't cook. You'll endanger a massive amount of people and property popping fires all over. Fire bans are set for a reason you know.

Now of course it is possible you know how to make fires safely but I'll just assume otherwise until you specify which places and situations you deem safe for fire making. The way you stated your habit made it seem like you'd do it anywhere. And considering that a tour can span several climate and vegetation zones it's actually quite difficult, if not impossible to cope without a stove if you plan to cook every day as like I mentioned, fire making in most places is strictly prohibited for a reason