I recognize you're referring specifically to the article, and not to my parenting in general, but it's important to note that many parents (including myself) do step up and speak up for our kids on a very regular basis.
I did in the case outlined in my article. I asked the teacher to back off on the writing requirements, at least until the school psychologist had been able to determine whether he had dysgraphia. I also reminded the teacher that my son's IEP outlined accommodations such as chunking/breaking up larger writing assignments into smaller, more manageable parts.