Since you're here - had you read Dr. Bloodmoney, or A Terran Odyssey, both by Philip K Dick? It very neatly fits the vibe but I've never seen it mentioned as a reference. And it has an idea (a guy who makes fake cigarettes, for people who won't let an apocalypse get in the way of their addiction) that seems so perfectly Fallout that I'm surprised it's not part of it. Or maybe I've forgotten that part.