I agree. Even if what TFA says is true (it is not) then the US companies would be competing with companies around the world for those people. And their own governments.
Not to mention the ones who start their own companies and work for themselves.
Which would mean that those awesome programmers would have all the bargaining power. They wouldn't be accepting H-1B wages.
Statistically, there cannot be enough of "the best" to feed the stated demand for "the best".
But it makes sense if you substitute "cheaper" for "the best".
And that is reflected in the quality of the code being produced.