> who is "us"?
People in the comment section of this forum where we are having an argument about this situation.
> In any case, I'm thankfully not in the situation to decide, nor am I an armchair general, so I'll have to excuse myself from invading or bombing Japan.
Seems like the simple way out.
> is only popular in the US
Its actually popular with everybody who has studied WW2 in detail. I'm European and I watch content by other Europeans who agree with the argument.
In terms of popular opinion, I don't think most nations think about it much at all.
> it exists mostly to enable them to retain their sense of being the good guys
I disagree. You can be the good guy without arguing that it was the better option for Japan.
> Other countries, unburdened by the necessity of always making the US look like the good guys, don't favor this particular narrative.
Its a simple matter of military strategy. Anybody that has studied military history can engaged in those arguments. Ending a war is difficult, and threw-out history we see different how they can end.
Looking at the strategic options at the time and doing the best you can at evaluating the potential casualties will lead you to the conclusion that you don't seem to like.
If you disagree with that assessment, then you have to make an argument for an alternative strategy that would have saved more people.
Argument like that could potentially be made. One might argue for example that going away from unconditional surrender, and trying to make some kind of deal where Japan could keep Korea or something like that could have been made.
But again, you actually have to make that argument if you want to be the a moral critic.