Accessibility isn't about the law

There is a legal element to it for sure. If you are a public body, or are funded by one, you have to create accessible experiences to WCAG Level AA, by law. People might ask you "what’s the minimum legal requirement?" or "what do we have to do?". They are not seeing disabled people as people. They see them as an "other" or simply a concept they don't understand as they have had no experience of disability.