Since a person being an adjective rather than the other way around doesn't even make sense gramatically...I can't really see how someone gets "insert name is insert illness' Out of it. So point being if someone is disabled they are someone with a disability I don't think people are implying they are in fact their disability.

I think people should describe it however they want for them self. I feel disabled by the conditions I have doesn't mean I am them it means they significantly interfere with my life....just my perspective.