My point was that it doesn’t matter who does the autopsy.
And beyond that, no matter who does the autopsy, there will be a conspiracy cottage industry if a finding of death by natural causes comes back. Cripes, look at the Elenin conspiracy mongering, all for a minor comet that broke up before leaving the inner solar system.
And I would agree with you on that under most circumstances, including the most likely ones, which are
A: he did die of natural causes (which I believe) — or
B: he was killed, but with an untraceable substance that affected the heart. You know, something Bill Ayers might have slipped him Super Sunday.
There is an option C or D, but I don’t want to speculate on those, because the reality is almost certainly A, and if not A, then B, and under either, you are totally correct.