Edit: I just learned from a comment on another post here that it's literally the only rule for this community. Thanks @[email protected] for taking out the trash.
I just ran into several comments all saying this. If you're going to be policing this community for "normal human behavior" you've certainly got a lot of work cut out for yourself. Almost everything about ADHD is an exaggeration of normal human behavior, we don't randomly tweet like birds or wear silly hats, it's the exaggeration that makes it a disorder.
It's also really invalidating and it's the same gaslighting crap that we've had fed to us by jerks our whole lives.
Yeah, pretty much all ableist slurs come from a past "legit" use (still mostly demeaning and oppressive terms, even if they were used by medical professionals, don't even get me started on ableism in healthcare) and have shifted in to general use as derogatory terms.
And using perceived levels of intelligence as a measure of someone's worth or values is why they're ableist.
Don't feel pressured to click any of these, this is just me info-dumping, but here are some related links if you want to read more:
https://web.archive.org/web/20230605065733/https://ollibean.com/intelligence-is-an-ableist-concept/
https://disabledfeminists.com/2009/10/23/ableist-word-profile-intelligence/
https://affinitymagazine.us/2018/01/08/stop-using-intelligence-based-insults-if-you-care-about-disabled-people/
https://thebodyisnotanapology.com/magazine/stupid-is-an-ableist-slur-breaking-down-defenses-around-ableist-language-liberating-our-words/
https://web.archive.org/web/20201108200517/https://raddle.me/f/Illegalism/77441/40-alternatives-to-ableist-and-oppressive-words
https://genderbitch.wordpress.com/2011/04/02/words-offense/