I'm not an attorney but there is a deeply troubling thing here to me. This was a lawsuit brought in US court against the US company, but the judge freely states that he ruled based on New Zealand law. That seems, at best, grossly inappropriate and grounds for an appeal. If this company wants the case decided under New Zealand law, they should fight it in New Zealand court. Is Glassdoor doesn't operate any legal New Zealand entities, then, there's nobody to sue. Maybe because this type of lawsuit seems especially petty and frivolous, but to me that seems like the system working as intended.

I don't see how any judge in any country is qualified to rule based on statutes in a completely different country.