Here are their guidelines: NZ Herald comments: The stories open for discussion today - NZ Herald
I say, why should a reporter/commentator have free reign to say what they want, and the reader has no chance to make any comment (in agreement or not)?
I'm sure some will argue that you don't have to read the article in the first place. Yes, some article headlines are written to be controversial. But if that is the case, why not accept an agreeing or opposing view?