A very good point. I remember putting together the Misogynist Slash Fan Bingo Cards over ten years ago, and while things have gotten better, I'm pretty sure we can still get some use out of them. Fandom is dominated by people who have experienced misogyny, and a lot of us still have trouble recognizing it. With the majority of English-speaking fandom being white, and not having a lot of experience even thinking about race, getting us to recognize racism in our own work is an uphill battle at best.

I like that End OTW Racism has specified that they're trying to focus on deliberate racism, rather than accidental racism, but that's something that would be very difficult to measure. I can think of a particularly egregious example that I clicked out of ASAP that I have no way of telling if the author knew they were being horrifyingly racist or not. Or how many of the readers recognized it, for that matter.