'just that the focus on maintaining a low weight takes up a lot of time and energy that could be expended elsewhere, so this can be seen as a tool to keep women down'
Ok am going to try and explain, it's not entirely clear to me either but will have a go!
I think women can diet fastidiously and it won't have much of an impact on whether they are successful in life.
Conversely I think that a lot of things do hold women back. The interruption of having children, loss of control over finances, isolation, unhappiness; all leads to an increased desire to look inwards. And blame themselves, and blame things like looks. And focus on that too much...
I remember psychologist saying in an unfavourable environment a person may start to look in the mirror more often as a way to regain a sense of self (sorry such flimsy evidence! but I do remember it and it stuck in my mind).
I also think there is nothing like power and success to make someone feel less critical of themselves.
Also the size 10 stuff was just to say that not every women is brainwashed to think this is the best, for some it really is the ideal weight.