I'm just musing, and hoping someone might have an explanation. Language is complicated, and emotionally-loaded words are especially so.
Let me put it this way. If I call someone cancerous, I'm not trivializing the group of people that have cancer and distilling them to a pejorative. In general, if I use a disease as an insult it's fine, but if I use a disability as an insult it's usually offensive. They're both afflictions, but they're treated differently in uncountable ways.
I could list some reasons, but none of them really feel like they get at the root cause of the difference. Do you have any insight?
Let me put it this way. If I call someone cancerous, I'm not trivializing the group of people that have cancer and distilling them to a pejorative. In general, if I use a disease as an insult it's fine, but if I use a disability as an insult it's usually offensive. They're both afflictions, but they're treated differently in uncountable ways.
I could list some reasons, but none of them really feel like they get at the root cause of the difference. Do you have any insight?