Normalfaggotry is all contexual, really. it's yes, like you said how there's tons of people liking X thing, and how thats thing's consumed or used.
Another issue is how on 22chan, normalfaggotry is diffrent then what normalfaggots and whoever else thinks it might be. A very wide topic.
Mainly, i doubt death grips is a normalfag band, even though its over exposed, but if there's something about the way people talk about it or listen to the music then its good to elaborate how it breaks the rules or is damaging to site or board culture.
Like for context how DBZ or naruto isnt exactly bad, it's just how the fans react, and the jokes that come from it, but surely a person can enjoy it in a way that doesn't make them a normalfag, but wojack, or say pepe, that's unrecoverable.