> Most people don't care, some people care but won't do anything about it, and some people think that "If i'm not doing anything wrong I have nothing to worry about". Most Australians trust the government will do the right thing.

I think that is because of media portraying these laws as a positive thing. Almost exactly the line you're talking about. I'm pretty sure I have heard politicians saying exactly: "If i'm not doing anything wrong I have nothing to worry about"

Its a sad but true fact that 99% of Australians (probably rest of the western world) only gets their ongoing education (beyond high school/bachelors in a specific industry) from the mainstream media. And we have close enough to dictator level of media diversity pushing a single narrative. Its not wonder people dont care about their privacy being eroded.