I think it's all subjective. What one person thinks is a great movie, TV show, song or play may be considered mediocre or even awful by another person's opinion.
That being said, I agree that there have been a lot of bad choices at the Grammy awards. One of the reasons why I don't watch the Grammies anymore. And while I don't always agree with the motion picture academy's choices for Best Picture, there are more choices that I agree with than what I don't agree with.