The weird thing is I am a man who was the victim of domestic violence for 12 years ending with a false accusation against myself (and a night in Jail) a divorce and a bad custody settlement and still I am a feminist. :)
Statistically, a woman who reports domestic violence in a custody case will receive LESS custody than a woman who does not -- even if the male aggressor has previous convictions. http://www.leadershipcouncil.org/1/pas/dv.html "Alienation," an accusation most often levied at women, is given more weight in custody determination than brutalizing the other partner -- even by psychiatric professionals, who really ought to know better than to presume a child is better off NOT alienated from someone who beats the other parent in front of them. To your more general point: There are certain biological differences between the sexes that cannot be erased, and in certain cases, such as pregnancy issues, it will never be possible to refer to "people" without regard to gender. But in custody situations, I agree; "parent" is better than "man" or "woman" as a determinant of fitness. The parent who parents as a verb should generally receive primary custody, while the parent who merely is, in the noun sense, a parent, should remain involved if he or she is not actively detrimental to the well-being of the child(ren) involved. However, your post, with its unsourced and broad generalization (a factually incorrect one, at that) does nothing to support the agenda you espouse. If you wish to see a "genderblind" world, why approach an issue of parenting by opening your argument with a pejorative and incorrect accusation levied at the opposite sex?