There are always contributory factors to such an accident, and I hope for Mr Walker that those people on the ground who confused the P1 in taking the decisions which were solely his will be pointed at in no unclear terms so that if need be the right prosecutions can follow. But let it be for the confusion not the go/no go decision taking because this was the P1's only task.
However, the question is what would the P1 think of all this were he here? Perhaps he would not wish anyone else to be blamed? Perhaps he was a true pilot like many of us who would never wish anyone else to be blamed for his own mistakes, and exchange these strong views constantly when on the ground due to bad weather?
I dont know those "people on the ground" with their history, nor do i know the pilot.
But i am aware of those concerned in another fatal air accident who, at the instigation of no cure no pay lawyers, have sued others where those that knew him simply know he would have never wished this to happen as the ultimate mistake on the flight was clearly his own.
So let us be clear... Whichever pilot rents a plane (and is checked out on it) is the P1 unless explicitly agreed otherwise on beforehand and noted down) and that person alone is ultimately responsible for all actions regarding the flight, all actions from others can only be considered contributory factors.
The drama meanwhile remains the same... Many people have lost a loved one, due to our hobby/passion and that remains such a sad thing.... But both pilots were part of our community, dying doing what they loved so much