Really, this thread is making less and less sense. If, as you initially said, you want to go to NZ, why is that (apart from the fact that people there speak English)? If you don't want to go there, there's an obvious, simple solution--don't go there.
FWIW, when I went there for a month, I had no trouble finding information online--and that was over ten years ago--so I'm puzzled as to why you say there's not much info available.
Also, FWIW, it doesn't automatically follow, as you imply, that followers of one religion have no interest in seeing sights associated with other religions.
Was the purpose of this thread to denigrate NZ or what??