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.
As a producer, I try to bring as many nice people as I can to insure that there's no screaming, there's no shouting, there's no bullying. The more of those kind of people that you can bring together, the better the experience everyone has on set.