The idea is mainly to help the chair, who does have a number of things to do manually during virtual meetings. The clerk could help her note the speaking order. The goal is not so much for the clerk to take care of that, but to help out the chair. Perhaps the recommendation could have been worded differently. I am not hell-bent on it. It was simply meant to lessen the chair's burden, so that she could focus on the main aspects of her work.
On May 13th, 2020. See this statement in context.