Interesting theory. Maybe it was a Chinese dissident?
When has China every been squeamish about arresting dissidents and tossing them in jail for a couple of decades? If there was a dissident onboard they would have arrested him when he got to Beijing and that would be the end of it. Why wipe out an entire airplane?
There’s a thread about a major Chinese Oil & Gas guy, living in Canada, on the passenger manifest. If I’m China, and I need Freescale’s avionics diagrams, I take the plane somewhere I can confiscate the avionics data.
This is also true of Iran.
This is also true of Somalia, paid Pirate state.
Possibly why no Statesmen of any nation are addressing this. No reason to go to war over a simple Boeing designs theft, via Freescale.