this is mostly tongue in cheek, but what if Australians as a culture have a predisposition to cheating? At the moment its about NRL officials, but you dont have to look too far back to see cheating in their cricketing system and also their officiating as cricket umpires. The number of dodgy LBW decisions that cost us test wins in the past is a prime example. Greg Chappell, Greg Dyer, Steve Smith, David Warner - all cheats. Maybe its the pressure from the Australian public but maybe its also a desire to win at all costs.
Smith and Warner was pure cheating.
Chappell was within his right to stand his ground after the Snedden catch. He was morally and ethically wrong to order the underarm, but it was a legal delivery (the umpires, under all that stress, genuinely missed the 'no ball' which it was - what drama, we'll never see anything like it again).
Dyer was sure he didn't know that he'd grassed that catch, and he lost his career in the aftermath.
Dick French, I believe, was too cowardly and incompetent to give McDermott LBW with Morrison's second last ball in that unforgettable Boxing Day test finale. Hadlee, who couldn't get Whitney out in the next, and last, over, was adamant the other umpire, Tony Crafter, would've fired McDermott out.
Cheats? I was at the MCG that day in '87! Maybe I've lived in Australia too long?