If you left Australia and went to live in the USA, and applied for a US Citizenship, and then assisted in a government-sponsored internment and/or genocide of other Australians who are living/studying in the USA… at the minimum, insofar as the status of your citizenship is concerned, you most certainly stop being Australian.
No idea what this means.
I presume you’ve got an in-universe source that would corroborate this? Also, remember, this is now attempt #6 at getting you to provide JUST ONE EXAMPLE of this being the reality of things in-universe.
You’d think that with it being common knowledge and all, you’d be able to find EVEN JUST ONE INSTANCE that corroborates this, in-universe. 