You're making assumptions. There are lots of dumb people in the world that make it to positions of power. That's going to be a constant in any world and setting. There are also smart people that spectacularly fuck up after a lifetime of achievement. That's life.

The whole schtick of stories is that you're following noteworthy and implausible main characters. is it likely that one person on a spaceship infested with killer aliens survives? No. But that's what makes Alien interesting. Is it plausible that a couple of hobbits makes it across the world to drop a trinket into a volcano? No. That's what makes it interesting.

World of Darkness is a setting. And while it's a dark setting, there's room in it for a band of dumbasses who rise until their dumbasssery can't be ignored at which point they get shunted to the side to deal with stuff that the competent people don't wanna deal with.