This is a false equivalence. If an innocent person held some information in their literal pocket, that they could very simply reveal to the world, at no cost t

This is a false equivalence. If an innocent person held some information in their literal pocket, that they could very simply reveal to the world, at no cost to themselves, which proved their innocence of some crime unambiguously - but refused to do so and instead chose to stand trial for some offence - it would be entirely rational to be suspect. This is why in some cases 'pleading the 5th' can be considered as evidence towards guilt. The government is more than aware of the vast conspiracies surrounding the incident, not only do they have a responsibility towards transparency in any event, it's even more important in this case. There's a 100% chance they are hiding something - otherwise they wouldn't hide it. So the question boils down to only what they are hiding: mundane administrative information? or 'The CIA did it!'? I suggest it's more towards the former than the later, but not all the way. I'm put it at 90% chance there were at least some shenanigans, but I don't think it was as bad as 'the CIA ordered his death' kind of thing. But there were shenanigans.