There is actually a lot more to the current situation. There were allegations of corruption and backroom deals. I was quite involved with the day to day of this operation both on the JMOVGP and contractor side at different times and have my own thoughts.
https://www.smh.com.au/national/defe...817-128jr.html
The Adagold/Hifly aircraft are "rough" and many of the troops complain but they are much better than the dodgy Soviet turbo diesels provided previously. A number of incidents lead to the ADF banning personnel traveling on Soviet era aircraft. The RAAF also didn't have the capacity to provide the airlift support at the time but SHOULD do now. I'm not sure paying a broker to provide foreign jets on a long term contract is a good deal for the taxpayer.