The way I read it is that "communication ability" is something people can use to justify racist hiring decisions. For example, labeling non-white speaking patte

The way I read it is that "communication ability" is something people can use to justify racist hiring decisions. For example, labeling non-white speaking patterns as "unprofessional", or non-American accents as "poor communication skills". When in fact, these candidates may have excellent communication skills, and in a blind interview situation the same interviewer might praise their writing abilities. But you don't really know, because the interviewer is rating communication skills in a scenario that can easily bring out a lot of hidden biases.