I disagree.
Nirvana was a breath of fresh air at the time.
Finally the vapid hair band was shown the door.
There was more redeeming qualities in the music of Nirvana than negatives.
I was a college freshman when grunge hit the scene and I couldn't have been happier to watch those poodle-coifed, over-produced hair bands fade away. Actually, though, Nirvana was probably my least-favorite band of the Grunge era. I felt they were more punk than rock. I really liked Pearl Jam, Soundgarden, Jane's Addiction and Smashing Pumpkins. Still do.
I've always felt that the short life of Grunge was a product of the times. The lyrics and message contained a lot of "Woe is me. My life sucks. Nobody understands me. The world is depressing." imagery. By 1994, the internet revolution was right around the corner. There was a sense of optimism and a feeling that the world was about to become a very cool place. This spelled the end for the doom and gloom of Grunge.
People said the same thing about "The Knack" when "Get the Knack" came out at the height of disco.