In your mind Bugliosi did, in minds that objectively look at the totality of the circumstances, he did not debunk the theories. And neither did O'Reilly. See Crossfire by Jim Maars. Read E. Howard Hunt's Deathbed Confession. Even the House Select Committee on Assassinations found that there was probably a fourth shot.
Just use your own common sense about the "Single Bullet" theory, without which the entirety of the Warren Commission's conclusion of a lone assassin, must fail. Think about the impossible trajectory and path of that one magic bullet, in order to support the conclusion that there were only three shots.
Then realize that Oswald was such a bad a shot in the Marines, that his nickname was "Shitbird". Then realize that the rifle he used was so subpar, that it is virtually impossible to get off three shots, much less three shots with that kind of accuracy, in the time that Oswald is alleged to have done so.
Believing in the Single-Bullet/Lone Gunman theory is akin to believing the mineral oil conspiracy, or that Judge Miranda Du is a learned jurist who objectively, reasonably, and thoughtfully enforced the law in ruling against Amarin on the issue of obviousness.
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