"Did U2 put out another shitty album this year?"
"I think so"
"Then that's your answer"
Despite this, the jazz, classical, gospel/soul, and folk categories are still respected and the winning artists are held at a high esteem. These genres are less commercially popular than pop, rock, country, hip-hop, and r&b and as such artists are actually awarded based on merit and talent rather than record sales.
The night is self-contradicting in that there is always a speech about the importance of music education and the need for new artists, despite the same artists winning every time they're nominated and performances being lip synced and incredibly dull, with very few exceptions.
"I think the Grammy Awards are nothing more than some gigantic promotional machine for the music industry. They cater to a low intellect and they feed the masses. They don't honor the arts or the artist for what he created. It's the music business celebrating itself. That's basically what it's all about." Maynard James Keenan, 2002
Despite 'My Beautiful Dark Twisted Fantasy' being one of the highest rated album of all time, it was not nominated for Album of the Year in 2012.
Jazz and soul artists aren't awarded and don't perform on air because the needs of bland Katy Perry fans are more important than those genre's comparative handful of fans.
The only good Grammy Award performances in recent memory were Adele (2012), Dave Matthews Band (2010), and the Elton John/Lady Gaga duet (2008).