As a history professor I'd like to express, first and opinion, and second a valid point.
First, and foremost...I hope this series doesn't turn into some odd cultural soup for the sake of political correctness.
Second,If a game, say Resident Evil, is set in Asia...I expect the overwhelming majority of characters and zombies to have Asian features.
A clear example of this is State of Decay 2, where the mid west is populated overwhelmingly by minority groups for no reason what so ever. Conversely if State of Decay 2 was set in California or Florida, then I would understand completely its change.
If the lore(history) can explain it, based on geographical reasoning (geography changes weather, weather affects culture as well as skin tone) then there is no problem whatsoever.