Not to mention 221kg of Lithium Batteries going up in such a manner as to completely disable all their electronics so suddenly and prevent them from making contact again or any sort of signal for distress, how did it continue to fly for so many hours after this? Even the UPS 747 flew only for 30minutes before it crashed. No ELT activation, no change of Transponder Code, No Mayday or Pan Pan Call, no erratic flight path, no terrified last messages or calls from any of the passengers or crew on board? Surely something that catastrophic would have caused it to crash long before and shown up in the materials found washed ashore?
Honestly, we're missing something in all of this because none of the explanations make sense, if it was a fire then how did it so suddenly destroy all means of tracking or comms but leave it able to fly? If it was hijacked then why did no one take responsibility for it and for what reason would they continue to fly it for so long?
Every theory so far is possible but at the same time they're also not and we really won't know until the Black boxes and hopefully the rest of the Aircraft are retrieved and can give us some definitive answers.
All we know for now is that at some point it turned around, all communications ceased, it started making course changes which seem deliberate then ran out of fuel and hit the water hard.