... the busting of the mc not inventing guns feels forced. you dont have to be a monster to create a weapon, or is the author claiming the scientist of the mannhattan project were monsters? they prob diddnt even know what there research was for exactly. or how about gatling's gun? it kills well yes but the inventors hope was that it would reduce war casualties by making armies smaller and thus reduce disease from corpses.
how about the reverse then? what kinda monster saves lives? the world benifited from the data of not just the nazi's but unit 731's experiments, or how about the work of saul krugman. what sick freak would delberately poison a horse to make antivenom? see where this falls apart?