I absolutely agree with you. I don’t think an arahant would hold gender identity. But this revelation is very different to how the bhikkhuni situation has been recorded, and is progressing today.
The Buddha himself says gender is no obstacle to spiritual achievement, acknowledging that women who went forth would be able to attain the highest goal. Yet he still (according to legend) initially refused the request.
The problem is not value-based (value of woman vs. man) it’s ‘practical’.
Right now we have rules about how ordination must occur, which create barriers for men and women to recognize the legitimacy of bhikkhuni ordination.
Then we have the vinaya that bhikkhuni must follow. This set of rules is in itself patriarchal and at times sexist, and proves a stumbling block once again for both men, women and female aspirants to reach the freedom of spiritual livelihood. The very fact that vinaya is split along gender lines ‘contradicts’ the fact that the arahant is beyond gender identity (and no, the genderised vinaya is not merely ‘practical’ ie. menstruation hygiene. there are rules in there that are expressly designed to subordinate women).
With these structures built into the texts and core values of what it is to be a bhikkhuni, how can there be genderless-ness or gender equity?