So your also against Armenia, Greece, Turkey and Poland?
ethnostates are bad, but if ethnostates dont lead you to expand your borders or oppress people within your borders they're not exactly problematic.
just like i can say im against communism, but i can still recognize that if you were an island nation with several thousand people communism probably isn't a big deal, it might even be a good way to run your country.
rules are defined by their exceptions.