I think this is the common problem with rating systems though. Youtube is saying that the dislike count and ratio are used to unfairly pile on and reduce the real signal of the video. Instead some videos get brigaded for various reason ("I don't like this person" gets conflated with "I don't think this content is useful")

There was a user-submitted recipe app that had a similar problem, where rating system on recipes is challenging because does it imply that the recipe was incorrect, the food tasty, the writing poor? It is too hard to get that signal from a single point of "average rating"