The first rule is always "if you have met one person with autism, you've met one person with autism". There is no "us" in the sense that we have something in common which distingushes us from all neurotypical people. So I don't agree with large parts of this article.
E.g I prefer person-first language, but that's not because I think, that autism is a pathology. I do identify myself with autism, but I don't think that this is the largest aspect of my personality, so I don't like to be called "autist" (as much as I don't want to be called "bigfoot" because I have 13 shoe size).
Yes, the author says, that there are people with autism who might disagree. But if he knows this, why is he talking about "we" and "us" all the time?