M0stly were the Greens trying to bring about the general and overall homogenising of women and other gender identities which are not male I would agree with you!
However they're using this term "non male" in a very specific context. They're saying men are disproportionately prevalent in politics, and they're trying to support people who are not men into those roles. It's a specific scenario where "non male", to me, seems like a reasonable (if clumsy) inclusive term for exactly what they mean.
I don't think this specific instance has any impact on feminism, because their initiative in this instance isn't about empowering feminism; it isn't about getting more women into politics, it's about breaking the dominance of men by introducing more people who are not men, not specifically so women's issues [sic] can be better represented but so that any issues which may not be prioritised by men can be represented.
Again, if they were generalising I would agree with you. But they're not. They just want less male dominance in politics and are willing to support people who aren't men to achieve this. I assume that would be in order to ensure the issues faced by other gender identities (not just women) are at least reasonably represented in politics, which seems an admirable aim to me.