Thanks for your concern regarding the visibility of the name of the reviewer.
We have considered variations of this variable when designing this course. Having anonymous authors and reviewers is closer to the real experience of a conference submission system but since this is a course we concluded that it's more didactic to favor the relationship between course participants and stimulate the networking element.
So in conclusion, it's fine to have the name of the reviewer visible in the comments, because the author will be able to see who was the reviewer anyway.
By the way, in case you want to hide your identity on the comments in MS Word you can also do it by changing your MS Word settings. See this article for more details.