You are calling for empiricism but mixing your arguments with anecdotes and "everyday experience". The empirical argument looks at questions like integrated communities as a form of diversity, and finds that it has socially beneficial consequences -- exactly what kind of diversity are you referring to which is distinguishable from integration? Do elaborate so that we can examine that in an empirical lens.
> Appeal to consequences, and thus irrelevant to whether my arguments are correct or not. Not that I accept the ridiculous assertion that my arguments are in any way comparable to the ones you are linking them to.
Let me draw the connection for you: do you agree or disagree that your initial line of reasoning would support the conclusion that ethnostates are morally neutral? When this reasoning is placed in a historical context, are you blind to the means by which ethnostates have historically arisen?