From my single reading of the entire preliminary report, the impression I got was that the Virgin crew made an assumption
The crew of YIR advised that they were commencing an approach via MIAEC. The crew of VYK replied that they were also commencing an approach and that fuel was an issue. The crew of YIR reviewed their fuel status and, assessing the intent of the radio transmission from the crew of VYK as meaning that they had less fuel than YIR, elected to fly to the north of MIAEC and allow the crew of VYK to conduct their approach first
It's easy in hindsight to suggest that perhaps a comparison of fuel states might have been wise. It's also easy to see in a dynamic and increasingly stressful situation, how assumptions can be made.
I think to infer that QF pushed in is simple QF bashing and unbefitting professional pilots. I also
suspect the QF crew were acutely aware there were no other options other than Mildura, hence their "busting minimums first time".