Ethnostate is what they now call what we used to call a country, most of which are built around ethnic commonality: shared blood, same language, religion, culture, etc. Ethnostate is spoken of as if is some kind of dangerous new ideological oddity. France, before the collapse, used to be filled with French people. Actual French people, not Potemkin Frenchies who are really Arabs and Africans. And they were different from the Germans, or the Spanish. Now, the idea of a (White) country building its identity around this, what we used to call a nationality, is seen as hideously racist.
If the Poles decide that Poland is for Poles, not Russians or Germans, who can say that this is immoral or ethnocentric or racist? That would be silly. Wars were fought for that right. But if I were to say that Britain is for the British, not the Africans or the Pakistanis, suddenly I am evil incarnate.
But no one bothers the Japanese, Koreans, or especially the Chinese about their ethnostates. Although the Tibetans apparently have a right to one, that the Chinese ignore.
Flags for a post-USA American ethnostate
But given the inescapable drama and tragedy of any human tribe (and the internal divisions and external foes that always exist*), ethnostates seem to me both the sanest and the kindest way to organize. Removes all the stresses of conflict-ridden "multicultural" situations. Cuts down on the "occasions of sin": situations which raise the likelihood that you will be drawn into bad behavior.
Restricting your country to your own people is no more "racist" or "exclusionary" or "an offense against human rights and the dignity of the person" than restricting your own house and home to your own family. There is nothing immoral about telling a stranger, either to your home or your country, "You don't belong here; this is not yours." If anyone has the right to enter or join your country --by hook or crook-- then what's the point of having one?
How can you support illegal immigration and not home invasion? After all, what's a country but the domus of a people?
*Take World War I as a single example. All White and a complete horror. You can build a border around the Croatians, Serbians, Montenegrans, Bosnians, etc and call it Yugoslavia, but that does not mean it finally makes any sense. As I say, I am not looking for utopia. I just prefer tragedy to catastrophe.