mirror neuron theory -- all fogged up

OK, that's a terrible pun, but it is so frustrating trying to understand all the research. Am I the only one who has been utterly convinced by the many that every child with autism has something wrong with his mirror neurons?? And yet, proving again how we do not know that which we think we know, today I read this summary of another recent study ... suggesting that after all, there is nothing wrong with the mrror neurons.