Without a doubt, there are hateful, spiteful losers who not only use but take pleasure in using language with the specific intent of causing maximum harm.
In spite of this fact, there I think it’s worthwhile to call out exceptions exist - since a plan of attack has the best chance of success when the full context, the entire enemy, is known. The last person I heard use the word IRL is:
kind and generous
thoughtful, otherwise respectful, well mannered
(a leftist pacifist vegan)
friends with a wide, diverse cross section of humanity
But I know they grew up around the word and haven’t seen someone it’s hurt, so they used it like they’d use any other word - without intent to harm, just ignorantly.
I’d take tips on how best to counsel them if it comes up again. I think exploring their potential blindspot (no/few disabled friends?) would be part of my strategy. Thankfully they are not just some hateful piece of shit because it wouldn’t be worth my time talking at a wall if they were. They will at least be open to entertaining an argument about the potential impact of their words even in able-bodied/minded company. Thankful that’s the kind of person they are! And when we accurately assess people it gives us our best shot at righting our collective vocabulary.