https://en.wikipedia.org/wiki/Flags_of_the_Confederate_State...
The flag probably would have been relegated to Civil War museums if it had not been resurrected by the resurgent KKK and used by Southern Dixiecrats during the 1948 presidential election.
And, if you use the second or third national flags, well, you know? I suspect that Apple wasn't going to let those ones through either. It's not as though they have any distinctive pattern BESIDES the battle flag.
That said the CSA had a real flag, there's really no reason to continue using the flag of its arguably most famous army to represent the entire thing.
I think the people interested in Civil War games, would appreciate the realism in using the actual CSA flag.
It's important for gestures like this to happen to fight against the growing threat of 'social justice' fueled censorship. There's a big difference between not selling to people who want to wave the battle flag to trying to erase every depiction regardless of context. Standing up against such foolishness is important.
No one who actually cared about not glorifying the Confederacy would continue to sell Gone with the Wind, as Apple is doing.
Be clear that you are not implying Valve is doing this without offering any proof.
Also, what is your opinion on Apple using the shooting in Charleston for PR purpose?