> Israel can either be aligned with the western sphere of influence or not, but belonging to it has some requirements and not being an ethnostate is definitely one of them.

Most of the West is made up of nations that are, to at least some degree, ethnostates. If they aren't explicitly ethnostates, then they have large political blocs that grew out of ethnic groups. See: Sinn Fein, Bloc Québécois, Scottish National Party, Basque Nationalist Party, Republican Left of Catalonia, Plaid Cymru, and others.

Most of the above listed seek to exercise political power in a given region based on ethnicity. Some even have large delegations to regional or national legislative bodies. All are in countries generally identified as Western.

Even some of what you would define a country as, generally speaking, is somewhat influenced by ethnic factors like language and religion.