Likely nobody gives a shit about the surviving conspirators, but remember that the CIA has pretty thoroughly denied any and all relations to the assassination since then. I'm just guessing here, but it could be that they're trying to cover up their own (and their friends') role in deceiving Congress and the public. Someone who was involved in, say, deceiving the Assassination Records Review Board in the late 90s could very much still be in service.
I'm still leaning towards who gives a shit. Any cover up dudes in the nineties probably didn't shoot the guy in the sixties.
Whenever I see Nancy Mace, they look enraged that they weren't born a man.