Different ethnic groups have different genes. Different genes lead into different behaviour in multitude things - whatever its culture, politics or even diets. Your genetic group might be more compatible with Vegan diet and hence you would be more likely to advocate for vegatarian/vegan policies (meat tax / meat ban etc.) but then you may have genetic groups that may have allergies to certain pool of vegetables, which has lead them to to advocate culture/diets that are more meat focused.

There hasn't been a single non-white majority country in this planet that has truly advocated Minarchist/libertarian state, based on historical data and personal anecdotes whites tend to be most liberal class in this planet. Human Rights, Animal Rights, Environmental Rights are all movements started by white people.

Point being that non-whites tend to be lot more conservative and authority orientated people, not to say there aren't white ethnic groups that aren't conservative, i'm just saying by average.

Any type of a ethnostate makes lot of sense, when you want to prefer a ethnic group that is more similar than yours so you can access to political system that is gonna be more okay with majority of the people. America's politics is a huge mess and immense division among people, riots etc. - same thing in UK/France, social cohesion in multi-cultural countries is just bad.

However the argument for White-ethnostate in USA, doesn't make much sense to me, maybe u could give a 1% of landmass in nevada or something, but moral claim to the land wouldn't fly in my book. Totally different story on Europe. Multi-culturalism is just capitalist ploy that is inherently immoral