I mean, there are cultural aspects of this that I have to really immerse myself in because I’m not Japanese. It feels almost a little invasive to be telling the story from their perspective, but what the hell? Somebody’s got to tell the story, and I’m not going to tell it from a jingoistic, nationalistic American perspective, because I don’t want to deal with all the sociopolitical aspects of, should it have been dropped, all that stuff. I don’t want to deal with that.
I’ve got to be very careful about it not being an indictment of the people who dropped the bomb. I think the message needs to be, this thing happened. It happened to real people. Let’s not go into why it happened and who was to blame and all that sort of thing. But let’s just take that as a moment in history frozen in amber that we need to learn from. We need to cherish that memory, because that memory might just keep us alive.
How can you learn from something without understanding why it happened?
The next level of shoot and cry is shoot and I wasn't even there. I was sleeping
I guess Hiroshima just did that 
Meh he will say stuff like this but I don't think he is either stupid or incompetent enough to not understand you can't dictate how people see and consume art, artist's intent is not omnipotent. You can try to be as "impartial" as you want but if he is truly invested into showing the horror and atrocity then people will make the connection.
This is like making Titanic but not including the speed limit controversy choosing to not willingly vilify Ismay in the movie. He knows what he needs to do to do a good movie, that scene along with Ismay's portrayal as a literal mustache twirling villain is not at all necessary for the movie, yet he added anyway, not because of accuracy either as the real Titanic inquiry testimony is quite different from this. As such a Titanic nerd he knew this would be inaccurate.
So he "knows" what he is doing even if he wont say it out loud, these interviews are just to create buzz, he already got fuck off level money he can do whatever he wants. I only think its likely he is already afraid of Trump affecting Hollywood, [insert subverting expectations meme here] etc... Watch liberals be shocked that the US is shown committing the biggest atrocity ever etc...