Earlier quoted context omitted.
What you're asking for also leads to total, Chinese-style censorship, as the government finds more and more content on these network it doesn't particularly like and therefore considers "extremist". Fun fact: Russia has recently passed a set of laws under which you can go to jail for simply "disrespecting" a government official. This "disrespect" can take the form, for example, of pointing out that their spending is…
You don't see any difference here? One government is trying to keep their people from seeing violent and disturbing content. The other is trying to keep their people from learning about violent and disturbing things that very government is commiting themselves to its own people. I don't think the NZ government is scooping up and murdering political disedents.
That should be up to the people, not the government.