Gender inequality goes both ways, though, just like racial inequality et al: if you start putting in quotas for how many female workers you must have, for example, then you are to a certain extent having a bias against men, as you are no longer looking for the best candidate to fill the position, male or female.
Say you have 20 male employees, 10 female. You need 5 new people. Out of the applicants, the 5 best happen to be 3 males and 2 females.
...now are you going to get rid of your "gender inequality" and nix the three men, or are you going to be actually unbiased against anyone and hire the best candidates, regardless of whatever else they are?