This accident MAY have been aircrew error, MAY have been a design fault and MAY have been the first victim of what we will someday come to call the Kintyre Triangle.
There is not, never was and (I predict) never will now be revealed enough evidence to convict the crew, the company or the Kintyre Triangle of clearly and conclusively having caused this accident.
In the absence of such conclusive proof, it is a fundamental of British justice to make no finding of guilt
But therein lies the system's dilemma. Having found the crew guilty 'because there wasnt enough evidence to nail anybody else', if that 'verdict' is overturned then the one possible scapegoat who can never be charged again (bearing in mind double jeapordy) is the scapegoat the system first pegged out for the tigers to devour.
So we will never know
I doubt we will ever see a widely accepted conclusion on this one. But perhaps the legacy of those who died on board - and those on the Board when they die too - will be that we re-learn the lesson about thinking ESPECIALLY CAREFULLY before passing judgement on those, tragically, not present to defend themselves.