It would be a good thing if the (((elite))) fled to NZ. As a small island nation, NZ would become a prison for them if the rest of us plebs decide to not allow them to leave or gain supplies. Ultimately a few well placed high potency charges and their underground bunkers become tombs. So yeah, all the (((elite))) can certainly move to NZ.
I don't know about their tax rules and rates to really calculate if moving there is worth it, but I do know they had some of the worst COVID lockdowns around and on of the highest vaccination rates in the world. Restrictive governments and a very high percentage of stupid people is enough to not want to move there.