They’re not because they didn’t mold the entire scape of what became a certain genre. That’s why to me the best band of all time is Led Zeppelin because rock and roll as we know would cease to exist without them. They laid the groundwork for every band to exist after them, Nirvana included.

Now I’m not saying Nirvana wasn’t important or influential, they most certainly were because they brought a sound and a city to the forefront of mainstream music but I don’t personally feel Nirvana was a true pioneer in terms of their impact on music as a whole.

Nirvana was a great band, the band of an entire generation but I don’t feel they’re the best that’s ever existed.