The complicating part to that is there's not the same Supreme War Council populated by militarists vs the Emperor split in modern Russia, there's just Putin. To match scenarios there would have to be an oligarch council in Russia pushing continuing the war while Putin put out feelers and that's not what's happening.

Also nothing about the anti-moral-bomb argument hinges on apologetics for Japanese actions just arguments that the bombs were unnecessary to achieve the end to the war. The only assumption is that there was some set of conditions and peace deal short of the two bombs that would lead to the emperor overriding the war council and surrendering.