In the West, insulting Blacks or South Asians, gets you called a racist, and you can face boycotts. Insulting Jews, will get you called an anti-Semite and you can face boycotts, and possible jail-time. Insulting Koreans can also get you called a racist, but no other serious consequences. But insult Chinese, then you are a hero. You're now 'standing up' to Communist China!
Australia always had a strong Sino-phobic undercurrent long before the Scott Morrison regime. When Scott Morrison came to power, he gives the green-light for Sinophobia, and everything is coming out now. Then you have other anti-Chinese Asians like traitor Chinese, and Indians joining in on the hate.
I have seen many anti-Chinese Australians justify hate on China on two popular reasons:
1) China is buying up property and practically taking over Australia
2) China is a threat for Australia in the region
Well for (1) Chinese people buying up property in Australia is indeed driving up property prices. But it is not a problem limited to Chinese people. There are Jews, Indians, Japanese, Europeans, Brits, and Americans buying up property in Australia. All of them are contributing to the property price hike. But just like the same logic of the African debt trap to China, not the IMF. China and Chinese gets 100% of the blame. Its easy, convenient, and solves nothing of Australia's problem.
For (2) China never used the PLAN to threaten Australia. China never talked about fighting Australia in some hypothetical war. It is Australia that sent its RAN to anti-China exercises. Its Australia that has the ASPI that continuously fans the flames of wars against China. Its Australia that sent troops overseas to fight and kill other non-Australians. Its the Australian SAS that committed real and documented executions of foreign civilians. So who is Australia to call China a threat?
I believe all these punishment Australia is getting from China is a good thing. There are many good people in Australia who are not hateful of China. But there is still a majority of anti-China racist Australians in the country to drive the nation to do things it is doing now. Its a majoritarian democracy after-all. So, Australia just have to be punished. It will never be repentant. Australia still celebrates its imperialist past like ANZAC day, etc. Now, China has the economic leverage against Australia, and it needs to be used to its full potential. Australia needs to be reduced into a weaker power in Oceania. Australia only understands pain, so it needs to go through pain to come to its sense.