I've only read the first page and i don't have the stomach to keep reading to its likely demise by the 4th page, but I just wanted to say that I'm so happy that I share an online community with people who feel this way.
I've worked with intellectually disabled children and adults for 22 years and its a shit paying job and sometimes thankless, but apart from the communicative development of between kids and their families is the realization of many in the general community that the r-word is so old fashioned and generally disgusting. I was generally ok with the word being unintentionally amended and surly-memed to "regarded" but now I'm seeing the old word pop up much more and even varied to "autistic". Really? I spoke up once about it, then was summarily shamed for showing consternation about it. Its surly, so ok, whatever.
I think Orale summed it up perfectly, quoted above: "I feel protective of those in society who are vulnerable. When I hear someone use cruel language that has historically been used to oppress and demean a vulnerable group, I'm not going to get in their face (assuming they're not actually using it towards someone in that group directly), but I sure as hell will think that person is a piece of shit and think much less of their character."