>This article is strange, they provide lots of counter evidence that in fact there are 10x programmers.

Yeah. It looks like the author laid out her views in the first sentence.

  > The myth of the 10x programmer persists, but the 
  > shine is wearing off.

"Myth" implies that they're non-existent, and "the shine is wearing off" implies that she doesn't much care for them whether or not they exist.