I think one of the main issues with Thiel's citizenship is he doesn't live here and never has, but has only visited a few times, just like many tourists. Different rules for the rich.
But hasn't he thrown many $$$ at NZ businesses? I guess that's a financial win for our country (or the company concerned) I'm sure they can apply for some crazy tax exclusion.
I think he put about $4 million in Xero, amongst other things.