Yes, it is poor taste, unnecessarily insulting, and assumes 'we' == 'US'. "Worth calling out"? Nope. That puts unnecessary emphasis on it, and creates unnecessary discussion. Either the comment should be upvoted or downvoted. Readers are mature enough to decide that. I tend to downvote any complaints or discussion about moderation (including this one by myself if I could) because it is boring/offtopic read. YMMV.
Not gonna downvote you. I am from the US, and am deeply ambivalent about the nuclear bombing of Hiroshima and Nagasaki. It may have ended the war sooner; it definitely killed hundreds of thousands of Japanese people. Not many of the European Allies said much at the time. That's war.