It is interesting, many comments on here relate to 'letting things lay'.
The people wanting this know that mistakes were made by all parties. No good will come from dragging it up again and making everyone upset just to come around to the same point that mistakes were made by all parties involved. Nobody wins, lots of people get upset because it was such a tragic event involving so much loss of life.
The second you start pointing the finger only in one direction
ANZ were nothing short of dispicable and morally irreprehensible, and so were Chippendales
others are going to feel compelled to point at the other errors that lead to the disaster, and we enter into a circular, emotional, endless discussion.
The lessons have been learnt. If you want to discuss it openly then all the failings should be addressed. Best to let it be.