He made a very basic error in flying towards high ground in dodgy weather and you are complicating things too much. This is an easy and useful lesson to learn from this accident.
It has gone on faaaar to long, so this is my last on the matter.
However, I can assure you I have got to grips with your comment. I dont know why you feel the need to keep repeating yourself.
If you cant understand the difference between someone making "a very basic error" and wanting to understand why (particularly given the less than usual circumstances) we best leave it at that.
Clearly the correct anaylsis is: "the accident was caused by controlled flight in terrain, a factor was the pilot made a basic error".
RIP