Not completely true. I worked in Wellington for a stint, and held a (mail-in) ballot from one of my friends in my own hands, and it was an absolute shitshow. Some local races absolutely used ranked choice, and not only that - you had to rank every single candidate or your vote wasn't counted.

It was my friend's ballot - she was in her early 20s, and she laughed and said "no wonder nobody fucking votes." She didn't vote in the election, and it kind of stuck with me.

Any election reform has to take into account the amount of work you're asking of voters, and it's what led me to eventually support approval voting over ranked systems.

Yes, I was referring to the national parliamentary election, which was what seemed to be under discussion (edited to make that clear).

There's also "Optional Preferential" where the formality rule is "number at least one, and as many as you like".