Under the current government we have the broken NBN, the fractured MyGov that has been repeatedly hacked, the falling over census website, other broken health care systems.
We can't trust that they can build it safely.
Good engineers, who love coding, can design a big system, are unlikely to rule over the Design. It'll be bad engineers, now Managers, with good political skills, that got promoted because its their only way to survive, being otherwise useless.
It is totally upside-down, hence the mess.
It will be AWS, no nonsense like kubernetes, possibly a dash of OpenBSD for public layer, least privilege IAM, Cloudformation everywhere. Solid. :) Open Sourcing it is an option too.
But that's mostly convenience for me. My wife worked as a doctor in emergency for a while. The only way to get a new patient history including all the information you've said is to call their doctor or ask them. Many patients can't give a full medical history and very few can do so in detail when it's complex. Many doctors aren't at work 24/7 when you want to call them. An E-health record is better.
I guess the outrage makes sense when looked from an American point of view where you distrust the government by principle?