I enter occasionally and mainly to see what pointers the judges give out. At my one guild's quilt show, they hire a accredited judge and the judge is supposed to avoid negative comments. There is a rating system and a space for comments. The guild does provide scribes for the judge.
I find the comments helpful.
It is true that judging is supposed to be objective, but it does sometimes, depending on the judge(s), turn out to be subjective.