Pass a Frozo
There is theory and there is the real commercial world.
Unfortunately, your industry experience is rather limited to say the least isn't it. Considering you have had your Degree and every single hour of your flying training funded by the Taxpayers, it is rather naive and narrow minded to say if you don't like it just leave. If you ever do decide to leave the RAAF and continue to enjoy a flying career with an airline, you may one day need the assistance to your welfare a "Union" can offer you. Assistance with your medical, loss of licence insurance, scheduling problems, leave issues or indeed loss of licence on medical grounds ( from eating too many frozo's say!).
When you have worked in the Commercial world you may be better placed to comment with some credibility.