They are not professional whatsoever in rankings, they have clear favourites and clear dislikes, this makes them biased.
Following on from the last point, when they have an opinion, they will never let up, they will poison people's opinions. This makes them bigoted
Finally, they lie and paint completely inaccurate pictures of something they want to "smear". This makes them bull$#*!, they should be thankful I can't give negative ratings.