Jeebus! Seems these days even the conspiracies morph in to other conspiracies.
I don't think the original "missile" conspiracy was about the Navy intentionally blowing up a civvy airliner. Pretty sure the original story was the Navy brought down the ship by accident, and the conspiracy was the cover-up. But, you know, with all the real shirt that's about to blow us all up, Frankly, My Dear, I don't give a damn.
Yeah I think that is the point. Covering such an event up, would require the complete silence of hundreds of servicemembers, for over 20 years. Not only would that be insane even for a couple days, but especially that long. This isn't soviet russia, where this sort of thing has absolutely happened. Wrong or right, accidental or intentional, there was no silence about the USS Vincennes, at least in the sense that it did happen. That is western culture, particularly US culture, for you. Our leadership doesn't have the luxury of a giant political firewall denying free speech.