You think this is bad. I remember Sid Meyer's Gettysburg years ago and the many emblems squads used, but how can you take the confederate flag out of a Civil War game. To me it's the same, how can you take any true emblems of war out of a historically correct game.
I collect Civil War, am a Civil War re-enactor. I respect Southern history..as history. Simply, I have no problem with any emblem in itself. I have two original battleflags hanging in my basement along with all the stuff I collect and dig up. But you'll never see a confederate flag hanging in my front yard or a southern rights bumper sticker on my car. I accept we lost the war of Northern Aggresssion.
However, with marketing, placing games on shelves I guess you have to be correct, so we couldn't blame Ubi for that, but as long as people use emblems historically correct there should be no problems with modders adding them.