Khloe is basically the mom of the family on the show. She's the only one tuned in to Rob, Bruce, and the younger girls and what they have to say.
Kourtney does her own thing and Kim and Kris are too busy on their paper chase so they're like F your feelings to the rest of the family. Kris Jenner probably treats Kanye like more of a son than Rob.
They better watch carefully with Rob. Loose cannons who feel like they have nothing to lose are the worst people to piss off.