What percent have opted in to contact tracing in Victoria at this time? I think it's a good idea for today and the next 2 years. Most countries are introducing it, and it is for the benefit of those who are unknowingly exposed.
I understand all the arguments against TraceTogether apps, but opting in does not mean opting in forever. As soon as people register a new/future cell phone ID, virus tracing ends. If cell phone ID is attached to user name and consent to use "I agree" in a government database, people are hooped into 1984 big brother.
ETA: where to quarantine was a real problem in mid-March. Relieved to hear that all countries are filling that loophole with hotels.