These discussions of who he supported, politically, need to stop. They show a real ignorance of politics in Malaysia and unnecessarily disparage a most likely dead pilot who's life was invested in flying airplanes.
I think the pilot's politics are germane. Yes, he could have been making some sort of statement - but on the other hand, it's been widely reported that the opposition leader was found guilty on trumped up charges. If true, then the government might be more than willing to pin the disappearance of a plane on one of his supporters, even if the pilot is totally innocent. The political angle works both ways, but I do think it's something that needs to be taken under consideration.