As someone says, it will just facilitates transactions with the banks and it could be more quick with their own stablecoins. So nothing spectacular here, and I don't see it as something that could push the price of any crypto for that matter.
And this could be the norm for other countries, CBCD's or any other crypto issues by their government or banks.
The coin was created only because of a personal interest in that country and it is impossible to compete with crypto coins that are already on the market.
So why are we thinking and imagining about Australia having a stable coin slide if indeed the coin is unlikely to be able to influence cryptocurrencies.