Because as APRA says:
The core of APRA’s mission is safety and soundness. Clearly, some of the revelations emerging from the Royal Commission have been disturbing and go to the heart of whether financial institutions treat their customers fairly. However, while institutions have a great deal of work to do to restore trust, I want to emphasise that Australians can be reassured that the industry is financially sound, and that the financial system is stable. That reflects considerable policy reform and hands-on supervision, over a long period of time, designed to build strength and resilience. We don’t know when the next period of adversity will arrive or what will trigger it, but when it does arrive we need to have done what we could to strengthen the financial system so that it can continue to provide its essential services to the Australian community when they are needed most.
Yet the banks have even managed to corrupt the lettuce leaf safety push. Via the ABC:

