I did some research about interview bias in undergrad and I think this might be an attempt to eliminate unconscious bias? For example, I had 3 classes in college where we never turned in any assignments with our name on it to avoid unconscious bias during grading, especially in politics classes. While it is not the most efficient I've read about experiments that test the unconscious bias of interviewers and most of the time ppl are very biased. But this research has so many loop holes bc some ppl have names that you can develop a bias towards or other demographic questions. One of my schools gave me the option of phone call or zoom and I chose phone call.. and preferred it so so much more.