As an Australian citizen, I have plenty of sympathy for those who have dual/multiple citizenship. They've been treated particularly harshly by both the federal government and their fellow Australian citizens. Some notes:
- There is an income test for permanent residency, which is required for most pathways to citizenship. Apart from family-stream visas which require a direct relationship with an Australian citizen, most visas eligible for permanent residency are work-related and you won't get one of those without an income test[1].
- There is an employment test, as above
- There is a language test, see the section on Language Ability[2], this has been a significant bottleneck for personal friends who speak English perfectly well
- Student visas don't make you eligible for permanent residency, let alone citizenship[2]
- Australia's community values explicitly state that dual/multiple citizenship doesn't exempt you from being Australian[3]
- Australia's pathways to citizenship (via PR, work visa etc.) are some of the most expensive and time-consuming in the world
[1] https://immi.homeaffairs.gov.au/visas/permanent-resident/vis...
[2] https://immi.homeaffairs.gov.au/citizenship/become-a-citizen...
[3] https://immi.homeaffairs.gov.au/citizenship-subsite/Pages/Le...