I know people who absolutely believe that.
Conversations with them make me understand the legends of Arthur and the Isle of Avalon, Brian the Blessed and the White Tower and Emperor Frederick Barbarossa asleep with his knights in a cave in the Kyffhäuser mountains.
Except JFK jr is hardly of their historic or cultural stature.
I guess everyone has to have mythic heroes.
And several months later there was actually a convention of them who met believing this was getting ready to happen with JFK Jr.
Unreal.