Since you can't really say someone's decisions on a creative project are "right" or "wrong,": if a game developer decides to go for historical accuracy and includes character customization, is leaving out ethnicity/sex options congruent with their "historical accuracy" goal?
My opinion is that if you're going to be a stickler for historical accuracy when it comes to race, it would be odd to let things slide in other areas. If they're being serious about it for every aspect of the game I won't complain too much.