Not really. It's quite on point - the day should be celebrated at least as prominently as Dec. 7. It caused WWII to come to an end.
Do you celebrate Dec 7? Really? How?
Exactly, as an (understandable) reaction to the America haters constant assertion that the bombs were unjustified. I'd probably say it myself if someone pissed me off enough.
One of the first surprises I got as a young adult was that the WWII generation (our parents) were NOT the war-happy yahoos that the Boomers portrayed them to be. As I got into History written at the time of the war and after I was struck at the sadness and horror “of the waste” expressed by the very Americans fighting it.
To be sure, many a man has raised his glass to the bombing that saved his own skin but I doubt too many of them, based upon their own testimony, would have seen anything happy about it.
As compassionate Americans, we don't have to rejoice in the deaths of others and the destruction of their cities to prove to ourselves that we were right. We don't believe in collective punishment of this kind, do we? Moreover, I hope we have not set a terrible precedent that may came back to haunt us.