The funny part is that men aren't the enemy. This is women waging war on other women.
Women publish and edit the magazines that glorify the waif. They run the fashion industry that seeks to tell women "what's hot".
So really, women are the enemy in women's search for relief from body image issues.
Look at the women that men find attractive...in general, the svelte model is viewed with the same type of "laissez-faire" attitude men reserve for other oddities.
So if men aren't the problem, then why isn't a feminist movement purging these types of images and behaviors from media? Can't a largely leftist media, run primarily by women (and yes, women run it...look at who controls the marketing departments in every major company that buys up advertising), control its own output? Or could it be, that at their very hearts, capitalist women know that they can sell more products to women by exploiting a sense of shame (regarding body size/type) in the average woman? That in short, the more awful you make a woman feel about her body, the more likely she is to buy products to assuage her guilt, mask her body, and cloak her feelings of media-imposed (and probably self-imposed) shame? Female or male, capitalism knows no sexual boundary. It seeks to maximize marginal utility in all fashions it can. And that's why it'll never change. You can't just let people feel good about themselves...it's impossible to get happy people to buy your stuff.
It's not man's fault. Hell, come to get big and look at a Big Mike Cox thread. Clearly we accept all kinds here.