[daepp]

My Occum's Razor(ish) explanation - works for me:

Pilot attended a trial of his hero, a Muslim leader, who Pilot felt was wrongly convicted
Pilot input (not plane) is usually to blame per most of those in the know here
Pilot boarded the plane right after the trial
Pilot input needed to disable comms
Pilot was a Muslim with a grudge
Pilot made no mayday calls
Copilot not skilled enough

- therefore -

Muslim pilot is a suicide terrorist!
(Seems like dejavu all over again)