I do understand why "blame" is an anathema to you. Nevertheless, in everyday parlance, you do something wrong you get the blame
The trick is though, why do you do something wrong? Why did Captain Collins do what he did? That is a question that can never be answered. However, those in management and the nav department are around to answer why they failed in their respective duties, and the explanations may be very simple. Under manning, belief that any pilot can make a seemingly simple VFR flight, but being unaware of the hazards. Who knows? I would be interested in those sort of answers, but I'm not aware those questions have ever been put. Everyone had an equal hand in the disaster, and it could have been prevented by the intervention of so many.
A point I would love to see answered is, why did the vast majority of crews who made the trip have questions as to when they were permitted to descend below MSA. Chippendale notes that the crews questioned admitted to their confusion. Pity is, none seem to have attempted to clarify the situation on return, hence a red flag was not raised for those who followed. And Chippendale, other than noting that the crews were confused, does not delve into the nature of, or why, the confusion. If it were to be given an answer it may go some way to explaining Captain Collins actions. Did the confusion stem from the term "Cloud Break procedure", rather than "Descent procedure"? Alas, we know not. A simple word can have grave implications.