The group which can self-identify as biased is probably much larger (fortunately?). The challenge is that by naming/labeling the big discussion systemic racism, its possible for a much larger (and perhaps more influential) group of people to blissfully ignore the big discussion being had about both systemic racism and systemic implicit bias - the latter of which to a certain extent the original article seems to be about.
That group is perhaps ironically the most racial diverse group one could conceive.