You may as well name them - the obvious one is Nathan Fien but he's not PI so doesn't quite suit the narrative. I'd quite like to see who you view as a NZer or not.
I assume it wasn't made up specifically to disadvantage Kiwis yet it does, you can keep denying it all you want but it's true.
Weird to harp on about diversity and inclusion when the rule is favouring some Polynesians over other Polynesians. Furthermore, part of the diversity in modern Australia is provided by NZers (and the Brits).
Kiwis have played Origin, they just have to also be Australians (or PIs ) to do it. And at any rate, no one is suggesting that "non-Ockers" be selected. NZers would fall under the same eligibility criteria as everyone else, just like the PI players.
Your logic is not logic it is merely a justification of your beliefs. It's frankly quite silly to suggest that a NZer can't be a NSWelshman or Qlder - Origin enthusiasts are idiots if that's what they believe.
Most NZers aren't going to be eligible for Origin anyway*, but it would allow players of NZ heritage the option to choose NZ if they wanted to - because despite the implication the PIs don't have a mortgage on wanting to represent their heritage and origin.
*Although I have heard of one school/club who tried to entice a young player and his family over to Oz before he met the cut-off age.