Is that going to be a trial by the laws of the land he resides in and not to a foreign country that the defendant is not a citizen nor a resident nor operates out of and that refuses to guarantee the same protections under the law to a non-citizen compared to a citizen[1]?

This same foreign country who passed laws for invading the hague if they came under trial for crimes in the ICC.

[1]: See assange's bid for first amendment's guarantees when the same foreign country was trying to extradite and "trial" him

He moved to New Zealand after much of the alleged criminal conduct, in a deal where he was pretty explicitly buying residency to the point that immigration authorities tried to keep it a secret. (https://www.stuff.co.nz/national/crime/6547471/Secrecy-over-...)

He didn't move to new zealand from the US so I struggle to see how that is relevant, it's not HK or Germany looking to extradite him.

If New Zealand says he can be extradited and stand trial in the US then that's the law. International law is a strange beast.

Genereally such a trial would take place in the jurisdiction of the accused unless the crime was physically committed somewhere else.

Kangaroo court it is. We say you're a movie pirate, so you are one. Life in prison for you.

...that is a summary of Kim's trial. Movie companies own the government.