but I think about those three astronauts (and by extension what they stand for) they're fairly clearly right.

Hmmm. I don't think so. The astronauts have been on board for nine months, and yet the women have to drug them to get them to behave destructively. Whilst the men may have the mindsets of sexist, patriarchal, militaristic dominators, the women still manage somehow to live peacefully with them in an isolated, self-contained (and space-limited) ship for nine months. And still they murder them as the only possible way to protect their peaceful and equitable society.