Sorry to be the downer on this article, but if you head to oneroof's "news" page [0] you'll see their entire raison d'être is to push out articles for NZ's media outlets to reproduce in the hopes of encouraging the continued misallocation of capital into residential real estate. So them making light of the house heating situation is in extremely poor taste considering such issues as NZ being the only developed country in the world with significant instances of rheumatic fever [1] and a quarter of South Island renters being stuck with cold and mouldy accommodation [2] (which they couldn't leave for weeks due to the pandemic).
[0] https://www.oneroof.co.nz/news/latest-news
[1] https://www.stuff.co.nz/national/health/122260447/we-have-to...
[2] https://www.odt.co.nz/regions/queenstown/warmth-issue-25-ren...