A good chaser for that is the U.S. Strategic Bombing Survey, which started during the war and ended after, so you had military + civilian experts + access to Japanese records:
The report also concluded that: "Based on a detailed investigation of all the facts, and supported by the testimony of the surviving Japanese leaders involved, it is the Survey's opinion that certainly prior to 31 December 1945, and in all probability prior to 1 November 1945, Japan would have surrendered even if the atomic bombs had not been dropped, even if Russia had not entered the war, and even if no invasion had been planned or contemplated."
You’re assuming that the ardent supporters are acting in good faith and not just exhibiting their thinly veiled genocidal urge (about half of Americans)
A good chaser for that is the U.S. Strategic Bombing Survey, which started during the war and ended after, so you had military + civilian experts + access to Japanese records:
You’re assuming that the ardent supporters are acting in good faith and not just exhibiting their thinly veiled genocidal urge (about half of Americans)
Nothing you can do about the fascists right now. You have to bring around those who may be receptive, though.