Yes, but the Cocos airport jives with the theory that the aircraft took a right turn after crossing the Malacca, which would put it dead on course for the runway.
These are Mayanmar waters, as well, and they haven’t been cooperative with the investigations.
Then look at the probable.
But do not discard anything until it is proven not to be the case. There are plenty of places to hide if the locals are willing.
You may be on to something, though.
Motive, means, opportunity...