I think the Australians are very stern with their immigration and visas, even before the Pandemic.
I was in two minds about Australia cancelling his visa. I thought they were a bit harsh but I was also impressed because they didn't compromise for VIPs. It's not fair if VIP celebrities get different treatment to ordinary people; Australians don't do that, in Australia you follow the rules or you face the consequences whoever you are. I may be wrong though. That is my perception of them.