I think it's good that now there's money and mainstream scientists looking at gut bacteria. And mentioning autism as well. When ds1 was diagnosed 8 years ago it was a complete no no to mention guts and autism to mainstream doctors - I remember his paed rolling his eyes about ds1 being on a gluten free diet (his paed was a bit of a dinosaur though).
I knew it had changed (when we saw the neuro recently the paed there talked about various diets) but I think the article emphasises the change in thinking.