Regarding outselling most other car manufacturers: this seems to be the Tesla realitity distortion, it is likely true for electric cars but for all cars VW delivered ~5 M cars in 2021 vs Teslas 900k
https://www.carexpert.com.au/car-news/vfacts-australias-2021...
Tesla seem to have sold 12,094 locally last year, putting them at 18th on that list.
https://www.carsguide.com.au/ev/advice/how-many-teslas-are-t...
Australia with its long drives if you leave a city and lack of infrastructure doesn't suit electric cars at the moment. Will change eventually, but likely lagging the rest of the world.
I know Toyota closed it's Melbourne plant in 2017 (Holden and Ford had stopped manufacturing even earlier IIRC). I would argue though that Ford and Holden (which I just read ceased operating in 2020) are still perceived as Australian car manufacturers by most. They definitely had some cars specifically for the OZ market.
Maybe shifting of goal posts, but this is an impressive achievement for a manufacturer who ramped up production only couple of years ago.