Earlier quoted context omitted.
I think you're overstating the uniqueness of Cobain's "brand" and underestimating the size of the anti-corporate movement in the popular culture of the 1990s. First, it wasnt really Cobain per se—Nirvana were huge for a few years, but Cobain really only became a household name in death. More importantly the rejection of corporate influence and "mainstream" art was the guiding ethos of that whole genre, and eventually…
This reminds me a lot of the tension the I felt when I was first coming of age as a young adult in the late 00s. At that point, it wasn't grunge, it was hipsters. But I always felt like: How can hipsters be hip and counterculture and a movement that is big deal culturally at the same time? As soon as a "counterculture" becomes a mainstream movement, it's no longer a counterculture... So which is it? Was Cobain a big…
Both, and it's referenced in the chorus of the song In Bloom. They were becoming popular in the mainstream and attracted an audience who were the antithesis of what they believed in:
"He's the one who likes / All our pretty songs / And he likes to sing along / And he likes to shoot his gun / But he knows not what it means / Knows not what it means"
see also: people who sing along to their favorite patriotic song Born In The USA.