I’ll be brutally honest, as someone who’s grown up in and still lives in England as an autistic bloke, who knows and speaks to lots of people defined by words on that list in the OP: There is a lot of bollocks to be found in this attitude. I don’t mean that as in the thought behind the whole thing as a concept isn’t 100% valid. That introductory stuff was very succinct in explaining a lot of what’s important about the use of language in regards to a lot of other subjects, but the examples given? It comes across as madness. Which is almost certainly on that list somewhere.
This also isn’t to suggest that that there aren’t valid words in the list, but you’d have to be a very specific type of person to get so far as to want to read this thread and still use “Autistic” as an insult.
But a lot of the words suggested are academic terms, which, and I mentioned in the Queer thread, you absolutely cannot assign a social faux-pas to, because that assigns a faux-pas to the condition. If you decide that you can’t use “blind” as an adjective, the result isn’t a safe environment for blind people, it’s the opposite. It becomes something that shouldn’t be mentioned, that people cringe at automatically when it is. And the result of that is that people who ARE blind are treated the same. And it absolutely can’t be compared to the Autistic example, because it has semantic connotations beyond physical ones built up over hundreds of years of use. There’s nothing that someone would use autistic as an adjective for that could use any variation of “dumb” “stupid” etc for. Because people that use “autistic” as an insult think that that’s what it is, they know that autism is a condition, but they think it just means “you’re stupid and can’t help it”, so using it as a synonym re-enforces that. It’s more complex than blindness and being reductive is harmful.
And as for the aforementioned “dumb”, “stupid” etc, those are the ones I find genuinely hilarious. If neither the person using the word, or anyone hearing them use it, knows of its outdated meanings from literally millennia ago, then those meanings, to all intents and purposes, do not exist. Meaning is defined by understanding, not some eldritch dictionary that decrees meaning beyond what we actually know we are saying. “Dumb” has no direct association with autism to a 99% of the population of earth, and frankly I’d rather it stayed that way, so I can continue endearingly calling my cat a dumbass for only drinking water when I hold the bowl up to his face for a bit.
Honestly, I feel like for most of those words, nobody should have to explain why them being on that list is so ridiculous. It should be obvious, but generally folk that don’t fall into any of the groups defined by words on that list feel entitled to be among those people, and evidently the easiest way to do that is to find old outdated meanings for words and claim that those meanings still apply, so they can act like they’re knowledgeable on the subject when they’ve basically just bullshitted their way into a place they weren’t wanted.
And people get fooled by this stuff, there’s a reason channers and the like are constantly using fake “SJW” accounts to convince people that innocuous stuff is “problematic”. It works. People are often stupid. And you know exactly what I mean by that because “stupid” doesn’t have the connotations that list says it does. And from the people that get fooled by that stuff, it slips into academia, where it stops just being a few people being strangely conservative about language, to people with power trying to police the language of people below them.
If you are trying to keep an eye on your use of language though, and you 100% should be, draw your own conclusions based on how words are used NOW, not what their definitions used to be. There’s value in knowing where words came from, and how means have changed, but not in determining how you use your language right now. Ask yourself if using a word is going to be hurtful to the specific person or people that you’re talking to, and if you don’t know, there’s no harm in asking. Don’t put too much thought into old meanings.
(I spent a long time writing this out so I hope it doesn’t come across as confrontational, I’m just very sceptical of stuff like this since I’m from England, so if I were to make changes to my language based just on that list, I’d sound an awful lot like the fucking queen)