Used, many companies by there policies alone disagree with your point that it is their "responsibility" to treat the pilots as respected members of staff.
the reason i feel this is the case is due to many pilots not respecting the company, a 2 way street.
if you were to try and calculate the reasons this accident happened, break it into percentages, "the pilot doing something stupid because he wanted to" would still be the highest scorer.
im sure theres been many other pilots in this company that have flown company aircraft and not killed themselves conducting a wing over, does that mean these individuals were breaking legislation by not doing what presumably all the others were doing, or did this pilot decide to operate by the laws, of which every CPL holder should be well versed.
contributing facts to this accident could even cover things such as the pilot having run out of his favourite toilet paper the night before and had to use the " rough stuff " (you know the single sheet spearmint scented stuff) he stole from the public toilets at Borroloola the day before, who knows, but ultimately he made the decision that caused his death.