True, but average people with nefarious morals might look comparatively brilliant because the scope of total things they can and are willing to do is greater, whereas decent people would just self-select out of those activities.
Additionally, and tragically, because they work in a field with a psychological cost, their market wages are higher to compensate, meeting a second metric simple folk use to judge merit/competency.
And so outsiders look in and say "brilliant", when really it's just a bunch of otherwise average performers, paid well, willing to do what others won't and open to a greater palette of possible actions because of it.
To quote BR from thank you for smoking: "We don't sell Tic Tacs for Christ's sake. We sell cigarettes! And they're cool and available and addictive. The job is almost done for us!"