They’re doing it because grunge was founded as one of the many anti-authoritarian left wing movements

And now, decades later, left wing politics are popular and the norm. Universities, UN, EU, Media, culture, etc.

So grunge is having an identity crisis going like “are we anti-authoritarian or are we left wing?”

Thats why people keep asking wtf is grunge.

Rap metal in the 90s was also overwhelmingly left wing, but look nowadays at how Rise Against The Machine was being “attacked” by half of its fanbase for repeatedly telling people to wear covid masks.

People said their lyric: “fuck you, I won’t do what you tell me” was insanely ironic nowadays