To me, all music is important. It is up to how each of us accept it, favor it or not..what determines importance in our own minds.
This said, these days so much music is out there and if you like the familar canons of popular music, you will simply hear another watered down repeat of something you heard years ago.
... unique music does not make it "better or worse". One persons Warhol is another persons Picasso. One not more important that the other, just accepted by different people different ways.
I also firmly believe if the Floyd were not well produced and well distributed, you may not have ever heard of them.
Not much of Pink Floyds music is really hard to perform or groundbreaking..but the productions themselves were. Many very high talented people working as a team. Likewise with the Stones.