Theatre people can tend to lose their center, they play so many roles that reality gets clouded and they often get to the point that just who or what they are is in question. This is a prime opportunity for manipulation by a person with a magnetic personality. It’s apparently a scary feeling, being nothing without taking on someone else’s persona. So, they’ll fall for anything in their personal lives, and often do. That’s why the left loves them so, and why so many are leftists.
It would not surprise me if top actors were very good at self hypnosis, which leaves them vulnerable to other groups that use hypnosis to manipulate them.