Don't Malaysian pilots check their flight plans - as prepared by either the airline itself or a contracted agency - before boarding the aircraft, or do they just load numbers into the computer and go along for a mystery ride ?
The route may indeed not be a direct line from A to B for a variety of reasons, taking into account wind, weather, airspace restrictions etc. etc. but the time to question is before accepting it, when the amount of fuel calculated has to be checked, as well ?
Curiouser and curiouser, said Alice.