I doubt the Offspring will really be remembered at all by music fans. They had some good songs, but as already said, they really weren't anything special or groundbreaking. Even the bands that don't sell well then become legends 20 years later like the Pixies or Husker Du were loved by critics when they first came out. The Offspring, on the other hand, arn't really liked by critics and are viewed more as a band that have a few really good songs, and some filler.
"I'll die before I surrender, Tim".