So much time passed, so many questions that were asked were either irrelevant, or left unanswered.
The unasked questions bred many conspiracy theories, but the most important of all should be, “Who benefited most from the removal of JFK, and the installation of his successor, LBJ?”
Cuba, the civil rights movement, the various intelligence agencies, foreign entities acting on behalf of present-day adversaries, or the Deep State generally, just to name a few.
If it was Cuba, Mafia, LBJ, etc. No way. We would have found out by now.
So either the original explanation was correct. And it was all a conspiracy.
Or the CIA did it.