I suggest making it possible to change or roll back my assessment of the comment. Just a little time ago, I lowered the estimate for the visitor's comment, since I did not understand it myself. But then I really understood what this comment was about. My opinion has changed, but I can’t change my assessment anymore.
It remains only to suffer on the subject of the wrong choice.
I offer the opportunity to change my assessment in the range from -1 to +1. And so as not to be abused, you can limit the possibility in time.