I think this is more because of how people choose to spend their time. I know several outstanding programmers that are also great at learning foreign languages and writing poetry, and in fact, it seems that learning human languages and computer languages have some strong correlations in research about linguistics learning.

But, no matter how good you may be at any one of these things, to become good at the others you must spend time focused on learning and doing them. Most of the great programmers I know prefer to spend their time in pursuing other things that they become good at instead, primarily stuff to do with physical engineering. (Aside, I've always thought the propensity for using physical engineering as a non-work hobby is guided by frustrations from the intangible nature of programming/software.) But, I do in fact know several that travel and learn foreign languages, or that write poetry and short stories as a form of outlet.