Australia has one of the highest rates of inbound immigration in the world. Number 2 in the OECD actually, right after Luxembourg.
And I, like the overwhelming majority of Australians, consider high immigration intakes to be a good thing.
Check your sources.
[1] https://www.abs.gov.au/statistics/people/population/migratio...
[2] https://data.oecd.org/migration/foreign-born-population.htm
[3] https://www.statista.com/statistics/1133441/australia-attitu...