Don't accept anything Simeon Brown says without a healthy dose of skepticism, he's talking shit up for political reasons, like some people in the USA are doing right now.
And if you do choose to accept it as unvarnished truth, welp, that's an ideological choice, not a rational choice.
The current government would dearly like to bring in more private providers to our healthcare systems, so are following the classic neoliberal playbook.
1) Underfund public services
2) Point out how poorly they're performing
3) Bring in private companies to do it "more efficiently"
4) Pay them the money that you refused to pay the public service. And then some more.
5) Private companies make bank
6) Services further worsen.
7) But hey, shareholder value was great.
If you want an example of this, just research the history of our railway system.
Or, you know, the last National government when the Minister of Health directed funding for surgery from the public system to the private system.
And then resigned to become the CEO of a private healthcare company.
Which is why when NZ comes in the top 3 of "least corrupt" countries, I painfully point out that we're in the top 3 of _perceived to be_ least corrupt countries.
Once again, The debacle that was NZRail -> TranzRail -> Toll -> KiwiRail is illustrative.
Toll, an Australian company, ran down our rail network even harder than TranzRail did, and then forced the government to buy it off them at a massive premium by threatening to just shutter our entire rail system.
And we gave fucking knighthoods to the two merchant bankers who advised the government to sell NZ Rail... _and then bought it_ in a consortium with an American company which asset stripped it and then chose not to maintain the railway lines because it provided them a significant tax write-off in it the US on accounts of depreciation or similar.
And of course, Sir Fay and Sir Richwhite now reside in overseas tax havens, although IIRC one of them still owns an entire island here.
Oh, and the NZ government had to pay for the release of one of their children when they were detained driving through Iran for their Instagram account about how everyone is kind.
Ah, neoliberalism.
(As you can tell, I have some strong feelings on this. Because I lived through it. Was it all bad? No. It gave us one of the most efficient agricultural sectors in the world.
Was it mostly bad? Well, inequality surged upwards in conjunction with neoliberal policies. So, yes.)