Everything you've said here could've easily been accomplished through the destruction of infrastructure targets (bridges, highways, railways, powerplants, industrial campuses, etc), esp considering german industrial output increased every year until '45, strategic saturation bombardment has never really been all that effective as a wartime tactic (everyone thinks you're an asshole, you strengthen enemy resolve to fight till the end, and they can just put their shit underground). The point actually could plausibly make a certain amount of sense until you realize actually how retard tier allied bombing operations were. We managed to kill more French civilians during Overlord than died during the entirety of the German occupation/invasion (consider that german capability was reduced to the sporadic tactical dive bomber and less parity with tube/rocket artillery, IE there is no way the Germans in northern France had the capability to kill that many people while fighting as they did). The allies accomplished this amazing feat of wartime logistics in ~3 months. Consider the magnitude of negligence and casual disregard of the lives of one of your allies civvies b/c you want the expedience of running shermans to the Rhine on a slightly more convenient timetable (Also bitching about Stalin doesn't count, my FDR in polio you fed and armed the Red Army).
Like nigga we firebombed japan until they gave a conditional surrender, nuked them twice demanding unconditional (an excuse to test the nukes, they weren't that much better than firebombing) and then gave them terms on the surrender and occupation that we probably could've negotiated out of them. To call the allied air campaigns anything less than sociopathic displays of casual disregard for civilians on all sides frankly relieves the strategic air forces of the western allies of blame for a casual disregard of human life.
For fucks sakes, we built 1:1 replicas of suburbs in the western USA to practice and test firebombing on to maximize civilian casualties, this was not an oh we bombed the entire city b/c industry, these attacks were calculated to create maximum carnage and death. I do not think its fair to grant that dropping napalm on civilians with the goal of maximizing civilian casualties is OK, regardless of context, its not just "turning cities into dust."