27/09: No-one, including myself, has ever said that the pilots were 100% to blame. The only reason why this accident is still argued about is because Mahon said that the pilots were 0% to blame.
As for the "there but for the grace of God" point: What if TE901 was a simulation? Wouldn't Collins get a D? And would he argue with that grade? In fact, he would probably have been harder on himself than anyone else.