Usually to get famous, you need to have some special talent like making music or acting. Or you need to be noteworthy or outstanding in some other way, like being at the top of your field in politics, winning a Nobel prize, or at least being funny or something. People are mad because the Kardashian family get outsize rewards for mediocrity. Like, they don’t really do anything, and they earn millions of dollars for it. The things that keep them in the limelight are vapid time-wasters like tabloid gossip and red carpet appearances.
Just as an example, the Jenner sisters wrote a dystopian sci-fi novel using a ghostwriter and it flopped. As teenage girls, they have access to things that are out of most people’s reach (in this case, the publishing industry.) They hired someone else to write it, and it was still shitty. That’s kind of like a ten car pileup of mediocrity and privilege.