Lets list empires that where killed by diversity;
Rome was destoryed by Germans and Huns crossing there borders whilst revolting.
Greece could not raise an army since why do I need to im not greek im Spartan. and Egypt got destoryed by a out of touch greeks who ruled egyptians.
great examples
Isn't that a conclusive fucking refutation of the idea of an ethnostate?
even Nations with common heritage like Greece was subdivided based on smaller and smaller cultural groups based on Civic nationalist feelings or Cultural tradition. an ethnostate is delusional to the point that you have to actively erase white people's culture and identity to create a 'white ethnostate' .
Rome wasn't just killed by Gauls and Huns. Let's not forget the disease that infested Europe at that time– Christcuckery. It slowly destroyed the foundations of this vast amd diverse empire for hundreds of years because of its exclusivist, universalist approach to religion.
Applying the contemporary concept of "diversity" to the fall of the Roman Empire is quite possibly the most brainlet-tier take anyone could ever have.