I don't know about any other Kiwis, but I do find it somewhat poetic that at about the time Americans were fighting to decide if a disadvantaged group in society should be someone's property, New Zealand was changing it's laws to give a disadvantaged group in society more rights due to different attitudes to property.
Yes, yes, you hate America, what's new?
Actually, you'll find quite a few conservatives over here saying that the Civil War wasn't fought over slavery, and that African-Americans should be thankful we enslaved their ancestors, because now they get to be in America instead of the jungle.
If I will comment though, despite what I said earlier, I think there is helpful data from America about what I can tell are the problems of the Maori.
In my race-issue research, I've found similar problems of poverty, low education, family issues, and crime being linked to historic and systemic issues. For example, I'm a Chicagoan. Here these are "inner city" problems, which is just the coward's way of saying "black" problem. Many say they should encourage their kids in school more, stay married, work harder, etc. After all, we have legal equality now.
But the history is interesting. Up to the end of the second World War, there was the Black Migration from the South into the urban cities of the North. There, they got the factory jobs that the young men left open. But when those young men came back from war, out went the black workers. Then began suburban growth and the "white flight" out of the city, and the "red lining" of districts where the banking system literally enforced a race-neighborhood policy in mortgage offerings.
Now, those things are fixed. But low socioeconomic status of the parents leads to low education of the children(This is statistically proven, not a correlation fallacy) and so on with more problems. People say they just need to be motivated and get jobs, but demand for jobs determines employment, and geographically they are in low demand areas (It is interesting how we recognize the demand factor for unemployment when we are hit with a recession, but otherwise it is "those people in X are just lazy").
Now, there are basically two views I've come across. One says that all that doesn't matter as long as there are those who overcome, and we do see cases. However, I see that as a silly idea. Perhaps each person entire race will magically purify their souls against all odds, but I doubt it. I believe in nature and nurture, but only one of those is readily changeable. Only one of those is constructed. And only one is not a person by person chance. Systematic change is far better, IMO.
But that's as far as I can get empirically. I'm only know education policy

, so I have no idea about any other policies, and especially no idea about New Zealand policies.
ETA: Oh, and the conservative argument is that welfare and liberals brainwash them into a culture of dependency.
It is odd that statistical analysis never encounters this...