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It’s not exclusive to rap and even then it’s an extremely small subset of people that do this. >


More than any other genre, rap is prone to these fierce cult of personalities,

Hmm... Pretty sure pop music is way worse than that. I mean... We"re talking about teenagers that immerse themselves into their favorite pop artist world, their whole life is or was Britney Spears, or Taylor Swift, or Katy Perry, or Madonna if you go back enough. 
I didn't include boys or girls band of the 90s, which was also incredibly cult-like, and we could probably add the recent K-pop that joined the cult of personality bandwagon
Pop in itself has always been the worshipping of personalities. >

Dude has emotional delays if he almost fought.