From the opinion:
> In New Zealand, statements of opinion are not categorically protected. New Zealand makes available a more limited protection, allowing the defendant in a defamation action to assert the defense of "honest opinion." ... The honest-opinion defense is an affirmative defense: the defendant bears the burden of proving that he honestly held the opinions he expressed.
> Here, then, the question under New Zealand law isn't whether the reviews on Glassdoor.com were opinions, but whether, if they were opinions, they reflected the reviewers' honest opinions. That question can't be answered now. The reviewers haven't even been identified, much less appeared in court and offered evidence on the genuineness of their opinions. Zuru, at this point, just wants discovery—to learn who wrote the reviews.