Given that many of the depicted countries list as having "sufficient production", I guess it's for the usual reason.
For those wondering what the usual reason is - https://www.reddit.com/r/MapsWithoutNZ/
That is just a subreddit, I don't really see where it describes the problem.
Anyway: It's because on the Mercator projection, it is a small point in the bottom right that easily gets overlooked or accidently cropped out.
https://en.wikipedia.org/wiki/Omission_of_New_Zealand_from_m...
For those wondering what the usual reason is - https://www.reddit.com/r/MapsWithoutNZ/
That is just a subreddit, I don't really see where it describes the problem.
Anyway: It's because on the Mercator projection, it is a small point in the bottom right that easily gets overlooked or accidently cropped out.
https://en.wikipedia.org/wiki/Omission_of_New_Zealand_from_m...