Pues Derek, efectivamente no me leí la entrevista. Cada vez prefiero saber menos de la vida privada de los actores, así me convencen más cuando crean su personajes, por lo que por la razón que aduce Chastain es por la que no quiero saber de ella a nivel personal, por eso de mantener el misterio.

Algo parecida es la actitud que mantiene el actor Ben Whishaw:

"For me, it’s important to keep a level of anonymity. As an actor, your job is to persuade people that you’re someone else. So if you’re constantly telling people about yourself, I think you’re shooting yourself in the foot."
y ya en un tono más personal:

"as an actor you have total rights to privacy and mystery, whatever your sexuality, whatever you do. I don't see why that has to be something you discuss openly because you do something in the public eye. I have no understanding of why we turn actors into celebrities."
Saludos