Failing instruments, dark and in IMC, lack of exact position knowledge, high elev airport with even higher surroundings, very likely lack of any crew management with dreadful authority gradients, the anxiety once they realized they had made a terrible mistake, the list of those items goes on and on.
Even with 23500 hours I would never say I could have saved the day from there on
Agree entirely. It's one thing playing around in the sim, possiby in simulated VMC and possibly simulated daylight, quite another matter pulling it off in the real world in the circumstances you describe.
The route cause of the fatalities isn't the lack at an attempt at an engine out apporach.