It’s not racist to say that a society that would rather commit ritualistic suicide than spread shame or dishonour to their family would fight to the very bloody end than bear the shame of losing the war.

It’s dictionary definition racism. You’re attributing something that a small number of people in the country did, to the entire group. It doesn’t get any more racist than that.

Your citations are poor as well, given the Allies also had conscription, and you’re citing Allied reports as though they could possibly be regarded as a reliable unbiased description of the Japanese.

You’re using “I’m not racist but…” racism, to justify mass civilian murder. Have a word with yourself.