I only watch the first few weeks of American Idol in order to witness the reaction of the judges and the slap of reality for the contestants. When there's only good people left, it's boring.
It's boring because at that point it becomes about grooming a show pony.
It's like watching sausage being made. They get wardrobe consulation, learn to sing Abba, make a goofy group music video, etc. All so they can become the next homogenized middle of the road performer for the industry to hype.