For many of them, their parents are paying. I read one story where a mother was heavily in debt paying for her daughter to travel the world. Then there are the insecurities and the "fear of discovery" like this:

https://www.google.com/amp/s/www.unilad.co.uk/life/instagram-influencer-on-a-hike-exposed-by-sisters-tweet-from-bedroom/amp/

The scam isn't in the Kardashians, it is in all the money they generate from wannabes thinking they can do the same. Paris Hilton isn't rich and famous because she made a sextape, it is because she made a sextape *and* is a Hilton.