Nirvana is far and away the most overrated band of all time. Foo Fighters are actually better than Nirvana all things considered. They were the ultimate grunge band, a genre that has proven itself to be in retrospect largely inconsequential culturally, socially, even musically. If anything it laid the groundwork for the 2000's butt rock. Just an awful subgenre started by a subpar band. Cue the Gen X fury.