I understand Winnie's point of view, since it's very confusing for me to see the ratings of those titles. They seem like my own and it's distracting that way. Plus, the column is the same as the one on the Completed List, so it seems that the scores given on the PTW are our own. There are also titles rated without being released yet. That doesn't reflect the average rating.
Maybe renaming the column and unable users to rate shows that didn't start will help.