While women still can’t become priests in the Catholic Church, they can in many provinces (the “dioceses”) of the Anglican church. But not all of them, which has led to schisms in the Anglican church and breakaway sects that limit the position of bishops, priests, or even deacons, to men. This discrimination against women is based on the tradition of Jesus having chosen only male apostles.
How do you argue against that discrimination? The simplest way is on moral grounds: it’s unfair to have a church hierarchy dominated by one sex, and there’s no moral reason why women shouldn’t be allowed equal access to the priesthood. Those, I think, are the reasons why many Anglican provinces allow ordination of women.
The worst way to do it is to argue that there isn’t a strong distinction between the male and female gender, that Christ could have been a hermaphrodite or intersex, and therefore that drawing sharp gender distinctions for the priesthood is unjustified.