It's utterly depressing that people seem to think that women choosing to be a "grid girl" or similar is a free choice. Do you people understand how systematic oppression actually works?
Example: Little Jimmy and Little Rosie are brother and sister. Little Jimmy gets to wear trousers and play with toy trucks, is encouraged to climb trees and to play rough and tumble. His voice and opinion matters. Little Rosie, on the other hand, has to wear frilly dresses that are restricting, play with baby dolls and learn how to nurture, is encouraged to sit passively and look pretty while her opinions are dismissed. Little Jimmy and Little Rosie do not grow up in isolation, they grow up with peers who are treated exactly the same as they are. It permeates their culture. Little Jimmy becomes Big Jimmy, who is praised for being opinionated. Little Rosie becomes Big Rosie, who is praised for standing around looking pretty and keeping her gob shut. Big Jimmy gets to drive the F1 cars and Big Rosie gets to parade around in her knickers in front of them. Both Big Jimmy and Big Rosie think this is a fine idea because, guess what? They have been taught since they were little that this is the way of the world. But not only that, they are also taught they receive praise when they fulfill those stereotyped gender roles, and torn down when they do not. So their self-esteem is tied into those behaviours.
Back to the grid-girls. Of course many of those women choose to do it, thinking it's an awesome thing to do. They get praised for their looks, just as they have always done. They receive the ultimate female prize: male attention. They fulfill society's expectation that the worth of a female is in her sexiness to men. And in today's world, they get to also say they are "feminists" because they are females making a choice (nb. Liberal feminism is anything but...).
It's all bullshit. Oppression, and emancipation from oppression, does not take place on an individual basis. Little Rosie wearing her frilly dress or growing up to become Big Rosie on the grid are not feminist choices simply because a female made them. They are choices that contribute to the continuation of oppression for millions of other Little Rosies out there.
And no, that's not to say the grid girls are bad people. They are simply women making the choice that is dictated by the status quo in a patriarchal society.
Frankly, the suggestion that the grid girls losing their jobs is a reason to continue with the practice is the exact same reasoning that slavery should not be abolished because it means the people enslaved at that time would lose a roof over their heads.