> Over the course of a year and hundreds of candidates I presented, I've managed to place just one developer in a company

I work at pseudo government organization where we take seminars every few months about dei, gender issues, etc... and it has made 0 difference when it comes to hiring. Ultimately my org is trying to reach out more, get to dei events, but that's as far as the effort goes. Once a job application is posted, it's the same old process. Maybe that's fair, but it felt disingenuous, and unnecessary, especially since we weren't great at hiring anyways.