This is really the point. Renaming an NPC from Dark Iron to something else doesn’t change who they are. They are all Dark Irons. It’s their race, not their faction. Your, and my, Dark Iron Dwarves are just the ones who sided with Moira, and joined the Alliance. Kill any Dark Iron who did not… including Princess Moira Thaurissan in BRD…?
As others have mentioned, do we then need to change every non-Horde Orc that has Orc in their name, or regular Dwarves, for that matter?