You may be illiterate, or have no legs, or neither, and be offended by the question. You feel your feelings and nobody can tell you they are valid or not, regardless on their opinions of those feelings.
It’s not fair for you to decide for everyone that this is objectively offensive. It’s patronizing. People who are illiterate or have no legs have their own thoughts and feelings that are just as valid as yours, and you don’t get to speak for them or anyone except yourself. They may or may not be offended, and that is not a choice you get to make for them.
It’s great that you are concerned for those people and have empathy - I believe, or at least hope that we all do - but nobody can speak for them but themselves. I think that is part of the reason for the pushback you have received in this thread.