That's a terrible defense. You're not very good at being the devil's advocate, I'm sorry to say.
You can have two women if the men
allow it? Do you not hear how medieval that sounds? Besides it's not even mathimaticly correct, even if the men are 67% of the electorate, you could still have the men vote for 50.0/50.0 gender parity by giving their top two prefrences to one male and one female candidate, and still end up with two women finsihing in top two overall.
Now basing a system on 50.0/50.0 gender parity rather than merit is to me silly to begin with, but if you do hold the position that it's vital for equality then why not simply reserve half of leadership position for women and half for men (as the Swedish Greens do) instead of reserving half for women and the other half... well what-ever.
Imagine if the system had been reversed, and you could elect two men but only one woman. There would thankfully and rightfully be a huge outrage. But apperently, symbolic equality is more important than actual equality.
If the Green party cannot even trust their own members to vote with their mind and not their sex, then I for sure ein't gonna put any trust in them.