If the government makes it illegal to complain or protest, they're going to end up with burned-down buildings.

“I know 99 percent of the population are furious with the minority who continue to disregard the health orders, and put the safety and livelihoods of families at risk,” said David Elliot, the Minister for Police and Emergency Services.

Quite the contrary. Pretty much everyone I know supported their right to protest, or if they were on the fence they sympathised with their aims. Their mentality was "What's selfish about wanting to provide for your family or put food on the table?"