OP here - my proposal is that we might benefit from women-only support groups where we can share the frustrations and experiences of being in the minority, not women-only workplaces.

That said, there's some research that single-sex education leads to better student outcomes, especially for girls. I wonder if similar research has been done for work environments.

I'm also very grateful to Katie and Shanley for being brave enough to stand up and write about their experiences.