I don't know anything about the OSS world. I'm just pointing out why that argument doesn't mean anything to me. Someone claiming no negativity toward Asians as a group tells me little about how they think of other races, especially since I expect much less negativity toward Asians than other ethnicities in the US in general anyway.
I certainly think it's possible that blacks and Asians face distinct challenges and biases in this community; one would have to be very naive or ignorant of minority treatment in the US to not consider that a possibility.