Just for background, there's an ideological divide in contemporary Aotearoa. On the one side are the proponents of "traditional" (pre-late 1960s) white Pakeha culture. They tend to be pro-farming and hunting (good vigorous manful activities), pro-traditional gender ideas and against most/all reconciliation/restitution measures towards the Maori population. This group includes a lot of Aotearoa's wealthiest white families and so has economic strength. Their party (National) is currently in power and supports generally liberal economics.

The other side is critical of these white tropes, and tends to support measure pushing back against whitification of Aotearoa (habitat/native population restoration, promotion of Maori culture, treaty settlements.) This groups is more popular with Aotearoa's middle and lower classes, and their opinions are functionally mainstream. Anybody openly endorsing the attitudes of the former camp are subject to a lot of criticism (although you would be surprised how many white homes are, within private walls, against this consensus.)

Because it's an ideological divide you tend to find this sort of defensive, irritable black and white argumentation when the pro-white side feels under attack. They don't get to express their opinions publicly very much, so they bottle up a lot of frustration.