Because thetans steal one another's facsimiles like they're trading cards. This is "why" you do the OT levels to bring the thetan up the tone scale where it's way below body death and that's why it's running dub-in of a dub-in on the whole track...can't remember this reference source.
Like Bea says...answer for everything.
This is the double deep stupid of Scientology. The various people claiming to be Marilyn don't even know their own subject well enough to realize Hubbard says they're running dub-in of a dub-in, that's how far south the state of case is...on this planet...at this time.
Never recalled being a famous person one time during auditing. Couldn't even recall my name but I do recall being a caveman dragging my cave woman by her hair. Now those were the days!