[throwaway19342]

Indeed, one of my arguments was the same one used at Etsy: our userbase happened to be disproportionately female.

To be honest, the atmosphere when I arrived was not that great -- a case could have been made that it was a hostile workplace environment. However, my colleagues saw themselves as loyal to the company, and they didn't see themselves as discriminators. To their great credit, they found ways to moderate both their their behaviors and their mindsets.

This approach won't always work. Some people are more entrenched in their attitudes and had there been someone like that there, maybe it would have been uglier and more difficult.

But sometimes, one at a time, people can change.