Is there any useful point in speculating as to the cause?
I do not doubt that everyone will have their own view as to the reason for this catastrophe but, I'm again lost as to the purpose of wild speculation. In the vast majority of cases it is not one single event that results in the demise of an aircraft and souls aboard but, often a a complicated matrix of seemingly unconnected events.
The likeliehood of any one aircraft suffering from any incident, fatal or otherwise, is actually very small. Reading the posts here might suggest the opposite - given the seemingly endless list of probable causes given by correspondents. No matter how plausible each theory may indeed be.
Simply reporting what news is made available may be boring but, it does avoid the creation of a vicariuos rumour mill.