There’s a clear campaign against the mentally ill with the global rise of fascism. Lots of it shows up in anti homeless rhetoric, but you can see it in the MAHA and anti vaccination movements.
There’s no reason to use the word “r-tarded” to describe someone. As someone who’s worked with the intellectually challenged, it’s an insult to them to compare them with people who are willfully ignorant.
I have a real diagnosis for ADHD and have used the word neurospicy before. I’m not trying to make some grand claim that it’s an okay word or what everyone using it is using it the same. Though I don’t consider myself a clown, so, maybe it’s not really a counter example.