If you want to have more diverse people speaking at conferences, make sure you get more diverse people interested in school. Don't give a conference flak because biases in school and society have emptied their prospective diverse speakers to a pool of zero people.
You can't possibly think that there are no non-white or non-male developers qualified to speak at this conference.
You can't possibly think that there are no non-white or non-male developers qualified to speak at this conference.