I don't agree with Tony Abbott on much, but this seems like a good question:
"If Ben Roberts-Smith transgressed, why wasn’t this picked up prior to his gallantry awards and why wasn’t any culture of brutality towards prisoners detected by his more senior officers, and dealt with quickly, rather than being allowed to fester, as has been alleged, for over a decade?"
I think Tony might be making a different point, but I don't see a lot of reporting about how that sort of person can get our highest military honour?