Bullshit, I self taught myself. I had no teacher and my parents were computer illiterate, and many of the greatest programmers I know followed the exact same pattern.
Wonderful! If, as you say, the greatest programmers are entirely self-made, purely because some god-given vocatio made them start BASICing up roguelikes, then applying incentives to teachers won't matter one way or another.
But if, on the other hand, this stuff isn't genetic but rather a matter of environment and upbringing, of a word of encouragement at the right time, of giving a seed of talent a place to grow.... well, but no. No, all you need is a computer and to be the chosen one.