I don't really pay attention to the rating, because most people will just give a 5 star rating, regardless. And I think you can't rate without giving a comment. (Not sure, I don't rate/comment much.)
I do occasionally give a 3 or a 4 (I liked the old version better, bit that might be confusing overall) when something is off. But most of the time I simply don't rate even if I comment.

Silke