Ido Kedar, in encyclopedic shorthand
For readers who want a fast factual orientation before reading Kedar's own writing, the Wikipedia entry covers the basics — and, unusually for this topic area, does so without polemic.
The article summarizes Kedar's biography: classified as cognitively disabled as a child, taught to communicate through letterboard pointing and eventually independent typing, author of two books, frequent op-ed contributor, public advocate for nonspeaking autistic people.
It also lays out, briefly, why his case is cited so often in discussions of supported communication: he is one of a growing number of people whose trajectory ran from facilitator-supported pointing to independent typing — which is exactly the trajectory critics often say is not possible.
How to use the page
Wikipedia is not the place to settle any of these debates, but it is a fair place to start. Skim it, then go to his books, the WSJ op-ed, and the blog. The encyclopedic frame is most useful as a way to anchor the timeline before reading the primary material.