There are fewer elite jobs than super-talented people. As a result, we probably underestimate the number of uniquely talented people, because only a sliver of them are currently in jobs where they can prove how awesome they are.
Personality test: do you feel this better explains the promotions and jobs you’ve gotten, or the ones you’ve missed out on? Those of us with “impostor syndrome” secretly believe we have “failed up”. But I suspect most of us believe we are undiscovered superstars who just haven’t gotten their chance to shine.