Consider an artist who creates mind-blowing work in a dungeon but never displays it to anyone. If that art is also his livelihood he will never sell anything and soon run out of money and possibly cease to exist and so will his art.
Compare this to a scenario where a person creates good work (not low quality) and knows how to sell it. The good worker may get only half of what a mind-blowing artist would get (if he sold) but he will live to create more art, learn and improve upon it.
Not trying to undermine the importance of great work, but showcasing your work is part of the Genius. You may create the sharpest knives in the world but if you are not able to convince somebody to use them they will eventually rust and become useless.
The Genius not only does great work but takes pride in showcasing it equally well.

