Below is a video of a panel called “Opening the Clubhouse Doors: Creating More Inclusive Geek Communities” panel from C2E2 2014, April 25, 2014. It happened in Chicago.
At about 5 minutes in, one of the panelists tells the opening tale about an experience asking about diversity in comics:
“What is the percentage of female readers?”
And he literally said, “I don’t know, and I don’t care.”