1. The bizarre * in "retardation", as though it's a slur like "nigger".
2. It overplays "now we know it's all autism". The whole point of "autism spectrum" concept is that it's a name for a basket of symptoms that are NOT understood by current science. We don't have reliable biological tests yet (but there are some great correlates), we don't know the mechanism, we don't now how to reverse it. All we know are some ways to help people meet their life goals by learning ways to work around the skills they lack.
The article has the feel of someone with an extreme-seeking personality: he swung from an extreme homeopathic anti-scientist to an extreme "sciencist", assigning magical powers to "science", not understanding what science actually says.