Lol, I'm not sure anyone is so great that they don't need education. Mozart and Chopin both took piano lessons, learning the scales and compositional structures of those that went before. Even the world's most famous prodigies started that way. In terms of scripts specifically, Sorkin started off in theater early in school, refined his craft as a writer for stage, eventually achieving a Broadway hit with "A Few Good Men". That story was picked up for a film, at which point he transitioned into a lengthy career writing film and television scripts.
Point is, everyone is "standing on the shoulders of giants" and most people go through multiple "stages" of education before creating the works that retroactively define them. No one should look at education as cheating, or the need for it as evidence that they are not talented. Talent is typically just a "magical thinking" word for industrious people that retained focus and applied themselves over a long period of time.
When I used to teach guitar lessons in the Silicon Valley for extra cash, one of the most common experiences was to have people come in for one lesson, try to play the instrument for 30 minutes, and then declare that they "just weren't good at guitar". I had to explain to them that Jimi Hendrix wasn't any good at guitar after 30 minutes either.