A lot of the commentary here is attacking the specifics of the bill as unrealistic posturing. This ignores what I think is the main point - that the NZ government has reached consensus acknowledging that climate change is an existential risk and they need to respond at a goverment level. The details of how they act will almost certainly be changed but it's a start. It also assists in putting pressure on Australia. This is important because Australia has a climate-change denial government and powerful coal mining lobbies, and with only 25M people generates more CO2 pollution than the UK, France, or South Korea [1][2].

[1] https://www.tai.org.au/sites/default/files/P667%20High%20Car...

[2] https://www.abc.net.au/news/science/2019-08-19/australia-co2...