You’re super imposing Westphalian Nationstate logic onto WoW when not a single group can accurate be described as a Nationstate with fixed borders and a formalized social contract that is outlined.
Furthermore all Nation-states were born on ethnic claims from their onset, or specifically divided to the end of instigating ethnic conflict during the late colonial period, which have been sustained formally (such as US laws banning interracial marriage until the 70s, or redlining) or informally (cultural dynamics). Please read:
- Nationalism: A Religion by Hayes
- Imagined communities by Anderson
- Nationalism by Anthony Smith
- Wretched of the Earth by Fanon
- If you can get your hands on it, the Destiny of a Continent by Manuel Ugarte