Bear in mind that those everyone thinks were part of the conspiracy are the same ones that would have to reopen it.
So if the conspiracy theorists are right the Conspirators are in charge and 'Justice" will never be served.
If they are wrong then those they accuse of conspiracy are better off politically by Ignoring them. Admitting that it is worth looking at is the same political action as admitting guilt
Can't win unless the ignore the whole thing. Same as "Don't Lose"