I thought that maybe it is not so much, as he seems to think, that the world loses interest in female performers after they hit a certain age, than the performers lose interest in the world.
For an actor working in television or film, I think it's important to understand how the medium works - how the camera and lenses work and how the sound and the editing works.
It's funny because all through the '80s I didn't do TV and movies very much. I prided myself that I was making a living in the theater.