Why is GST so high on food in NZ? What are the pros and cons of high GST?

I made a detailed video previously explaining why food is so expensive in NZ, and one of the reasons I mentioned is our high GST on food. There are pros and cons of implementing high GST on food and each of these has an impact on New Zealand’s economy, businesses, and its consumers. I’ll explain the pros and cons and then discuss the reasons why NZ opted for high GST.
About me:
I'm a Kiwi travelling around New Zealand in my used caravan, making informative videos about the campsites I've visited. The reviews are about DOC campsites, freedom parks, campgrounds and holiday parks.
My vlog is for camping tourists (both international and New Zealanders) who are travelling in caravans, RVs, vans, buses and motorhomes, who want to see the facilities campsites have in advance of staying. I discuss what I liked and disliked about each park, so you know what to expect.
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Thanks for watching!

[@RobbieK10]

15% GST in New Zealand

[@caravanlifenz]

That's right; we have a uniform rate of 15% GST, including on essential food items and healthcare.