The wikipedia article supports the point I made that you claim I made up:
"The central tenet of ethnic nationalists is that "nations are defined by a shared heritage, which usually includes a common language, a common faith, and a common ethnic ancestry.
Those of other ethnicities may be classified as second-class citizens."
That doesn't say "sometimes", that says "central tenet".
Considering your reading comprehension, you calling me "thick" is hilarious. Quite literally the second paragraph of your own citation, it supports my main point, and you somehow still have the confidence to say that I'm making it up. That's some misplaced confidence.
The apartheid in Israel is well documented, even by Israeli sources, I'll take a page out of your book and refer to wikipedia: https://en.wikipedia.org/wiki/Israeli_apartheid
If you would apply some elementary logic to the situation in Israel, you would be able to understand the apartheid and racism towards arabs. Israel quite literally disenfranchised nearly a million native Palestinian arabs in 1948, and are neither interested in goving them their own state, nor absorbing them into the state of Israel. Why not give them Israeli citizenship if they want to, and a right to return, as the U.N. has required them to do? Because they're the wrong ethnicity. Any ethnic jew (by Israels definition) is given automatic "birthright citizenship", even if they have no connection to the land, but arabs that were born in the territory are not let in. That's ethnonationalism right there (that's part of the apartheid).
The rest of your post is a weird starwman handwave? (there's only single persons of the non-plurality ethnicity living anywhere?), and arguing about names, which is quite literally too dumb to even engage with.
One final point: you seem to think I believe that nation states are a rare phenomenon, maybe because you're conflating the concept of nation states in general with the ideology of ethnonationalism. The most common form of nationalism is civic or cultural nationalism (https://en.wikipedia.org/wiki/Civic_nationalism), which does not place one ethnicity above another. It's not ideal either, but it's considerably more moderate.
You're clearly out of your depth and arguing in bad faith, and I think you should calm down before you reply again. Maybe the discussion will be more civil then.