The question you responded to was asking how one proves sincere intent. You said you don't need to in the US. This article is about a US judge basing a decision

The question you responded to was asking how one proves sincere intent. You said you don't need to in the US. This article is about a US judge basing a decision on a phenomenon in New Zealand law regarding a New Zealand company wanting information to sue people in New Zealand; any answer limited to "yeah, that doesn't apply in US law" doesn't answer the question. So, for anyone with experience in New Zealand law: when this New Zealand company sues people in a New Zealand court of law (as is discussed in TFA), how would the defendants go about proving they sincerely believed something?