OTOH,
@Zardnaar, we never locked down, at least not to the degree you're talking about, have a population density several times higher than New Zealand, and a constant stream of travel to and from China on a daily basis. Yet, our numbers aren't much different than yours. Our total deaths was less than a thousand, and we have a population, what, 8 times the size of yours in a geographical area that's pretty similar. New Zealand and Japan are close in area size.
So, this whole argument of "WE MUST LOCKDOWN" doesn't really fly. It's one solution, but, not the only one. Heck, Japan's freaking out because we lost 3000 jobs this year.

Compared to other countries, we've come through this relatively unscathed. And, let's not forget China as well. While they locked down Wuhan, the rest of the country didn't lock down at all. My student's son lives in Shanghai and they didn't really even notice any difference day to day. To the point where her son sent HER masks from China.
My point being, there are other methods. Chasing clusters, for one, seemed to work for us pretty well.