Some women are into men in appearance but hate their genitals. Some STRAIGHT women don't exactly find a penis appealing. just as some lesbians don't exactly feel aestetically content seeing a vagina (infact I know at least 2 lesbians who're like that). You get all sorts. Physical attraction is all a matter of being attracted to the body as a whole, not just that one small part.
That's as far as genitals are concerned. But men-bashing is not exactly a domain of the lesbians (regardless of what most here said, most lesbians I know get along famously with me and I'm a straight guy). I've experienced just as much (if not more) men-bashing from straight women. Cause they're the ones who have to deal with men more closely in a relationship environment.