It was a bar that showed the ratio of likes to dislikes

The dislike bar was real, I'll tell ya, I've lived nigh on eighty years and me own two eyes seent the dislike bar clear as day! Ye better believe, sonny, it's the truth!

I don’t see what was wrong with the comment of /u/voyajer. Can you elaborate?

Yeah, the dislike bar used to be a thing. You could see how many dislikes there were compared to likes, all represented on a line below the two buttons. It was sort of like this image, except imagine the "yes" and "no" as a single line (but retaining their separate colors).