The first song on a first album has a tendency to be a mission statement.
The Beatles led off with "I Saw Her Standing There" and just continued creating hits from there.
Nirvana stormed in with "Blew," a de-tuned rumbler of some kind of hard rock, and things only got weirder. The solo sucks enough that you maybe think, "I want to listen to a whole album of this?" And the solo truly is saying, "You want to listen to a whole album of this?"
The really funny thing about "terrible" Kurt Cobain guitar solos is that he reproduced them note-perfect live. He composed those slop-bags of sounds, and must have rehearsed them devotedly.