In the 1950s, the US Air Force conducted a famous study on pilot size. They measured the physical dimensions of more than 4,000 pilots and calculated the average size along 140 dimensions, like height and chest circumference. They arrived at an average range for all 140 dimensions and theorized that most pilots would fit within that range. As it turns out, not a single pilot of all 4,000 fit within the average range for all 10 dimensions.
And just like how not everyone who learns to write will go on to become a professional writer — nor everyone who learns arithmetic will go on to become a professional mathematician — not everyone who learns to code will go on to become a software developer. But all people who learn these things will be immensely better off as a result of their efforts.