Isn’t that Sirhan Sirhan’s defense as well?
Yes, it was Sirhan Sirhan’s claim. Some of the evidence just doesn’t add up in that case.
Then you have the JFK assasination in which E Howard Hunt told us who did it. And Cord Meyer( supposedly claimed he recruited Bill Clinton and was his handler) claimed that his ex-wife who had an affair with JFK was killed by the same people who killed JFK.
There are a remarkable amount of people connected to the CIA that were there that day - or look-a-likes. They might have wanted look-a-likes there for some reason.
Just all in the folklore of conspiracy theories...which will always remain conspiracy theories.