Earlier quoted context omitted.
It's being blocked for political reasons. Just like when the US went to war against Iraq, one argument was "Saddam is a dictator that kills his own people". But there are worse dictators before and after Saddam. You are using the same manipulative cherry-picked argument to justify censorship. Censorship is a weapon used by dictators, not free leaders.
New Zealand has decided, democratically, that we want to have a censor who does this sort of work. What would you consider to be a reasonable criteria for the censor to block a video?
Every culture has it's own definitions. The problem is that the world's cultures are mixing online, and the lowest tolerable level will win out. So, it doesn't matter what I think, it's what every combined culture, religion, government , etc... will choose.
And they will choose anything and everything that threatens their power. The actual contents don't matter.