I didn’t interpret the original post that way. “X realist” on this site doesn’t typically mean “person whose views about X are realistic” but rather “person who believes X is a real thing.” In this case, a “race realist” would be someone who believes that there are real, significant differences between races, presumably on a genetic basis. A race anti-realist would be someone who does not believe that. Both of these are categories of positions, into which a variety of different particular viewpoints might fall.
I didn’t interpret the original post that way. “X realist” on this site doesn’t typically mean “person whose views about X are realistic” but rather “person who believes X is a real thing.” In this case, a “race realist” would be someone who believes that there are real, significant differences between races, presumably on a genetic basis. A race anti-realist would be someone who does not believe that. Both of these are categories of positions, into which a variety of different particular viewpoints might fall.