That's my interpretation of the sentence: women are wearing them, even if they're not anorexics or models, insisting that "wearer and viewer" embrace their figure. You know, like the Indian teen I saw the other day. She was wearing them, even though her flesh was hanging 1.5 inches over the waist band and even though she had plenty of lower back hair. She knows that some men will find that attractive and, if they don't, fuck 'em: she likes it and finds it sexy or, at least, something she's not going to hide. She's not afraid to put her body on bold public display. It just may not be the kind of body you, or that guy over there, or the woman over there like. Heck, most hetmen I know find this stuff sexy even if they look at the body type and find it mostly repulsive.
What is feminist about it, most likely, is that women are advertising their sexuality without worrying if it's going to earn them an MRS degree. So, you think it's slutty? Sure, let's fuck. Bye.
Which, according to Doug's recent forward, is making some hetmen feel less than manly! :)
Kelley
"We're in a fucking stagmire."
--Little Carmine, 'The Sopranos'