OP here. I'm very pro-diversity but leaving that aside, my experience on the hiring side is that there is a huge pipeline problem of even getting resumes from "diverse" candidates. Any company applying some kind of theoretical "filter" must not be in a rush to hire at all given how relatively rare these candidates are, in which case they wouldn't be likely to hire qualified "non-diverse" candidates without this "filter," either. So it doesn't really matter either way.
