I don't agree immigration per se is the issue but there are lots of policies and systems that are not keeping up with the levels of immigration as you have pointed out. I think part of the problem is that the people in charge are benefitting terrifically from squeezing the population and driving up the house prices and therefore increasing their own personal wealth.
The amount of space available for growing crops in Australia compared to the population is very much higher than in most European countries for example
The "keeping up" concept is an accurate one. It's been suggested that a pause in population growth would be needed for the infrastructure to be brought up to scale - a decade seems to be what's required. That's of course an academic concept as no such pause would be politically palatable. The resources to do it is another question too. Thanks for the thoughtful comment 👍