Hazelnuts39
Right. Full circle then. There have been dozens of theories, and points of view, not to mention politics. You bring us back to the fundamental focus of this crash. If it is to be instructive (at such a cost), we need to address some few things.
BUSS not important? Do posters here dismiss its possible ability to save the flight from the Sea? Add BUSS, and the a/c lands in Paris. Add PITCH/POWER, CRM, high altitude upset training (or at least emergent resources to instruct),(check lists to address it), the pitots are less important. Things break, but procedures are developed for that eventuality.
Particle ID? Perhaps a high speed version of a Particle separator? Design makes progress, but the impetus for change is lessened when players seek scapegoats.
We will see how far the authority goes to be aggressively honest, in the interests of the pilots and the passengers. If this is but a reprise of Rudder hardover, fuselage fracture/disintegration, and several iterations of a fundamental flaw must ultimately goad the players into change, it will be sad. Also, not unexpected.