J.E.D.I. said:
And everybody sort of wants that validation that they have a good taste in music, so when you're shitting on their favorite rapper of all people it sort of knocks that.
To go along with that, people get a voyeuristic, vicarious thrill out of putting themselves in the rapper's shoes. That's why the fans pick up the slang, the style of dress, ideologies and the mannerisms of their favorite rapper. Fans adoption of certain rapper ideologies (along with technology) has contributed to the downfall of the music business imo.
The content in today's mainstream hip hop has come down to these basic points:
"I have a lot of money"
"I can do anything I want because I have a lot of money"
"I can have any woman I want. Why? Because I have a lot of money"
"I'll kill you if you get in the way of me making more money"
"You want to be like me" (because of the first 4 points mentioned)
Living in a capitalistic society, we're conditioned from birth to believe that money is EVERYTHING (power, freedom, happiness, etc...). So to the impressionable type, it's an accomplishment of superhuman proportions to achieve what most of these rappers are talking about they've achieved.
Kids look up to shit that seems like it's out of reach for them. This is where the vicarious thrill comes in to play. You do anything to disrupt that thrill, your hero-worshipper fan will get pissed, lol