SA are really scrambling, I finally got an email with permission to transit in ADL airport today, which was something that I actually did on Friday, flying BHQ-MDL-xADL-xBNE-TSV so 4 states in one day, a cross border resident. Needless to say the SA travel declaration system wasn't exactly set up for situations like that and their systems at the time had difficulty dealing with the concept that someone would transit in ADL flying from one state to another state via ADL, but it was the most practical and shortest way to do it. I think all the complexities of the evolving state border restrictions will overwhelm the relevant state authorities, especially for transit passengers.
Oh - and the QLD Covid-19 vaccination booking/sign-up website has just crashed. What excellent timing.