I think introducing bitcoin to persons with disability is quite a good idea but that will depend on what physical disability a person has.If he/she has the capability or physically fit and have background in using computer then that would be a great opportunity to get involve in cryptocurrency for them to earn enough money to support their financial needs.
I also favor for this. Because this will help the disabled people to earn even they are not able to work and do physical tasks. While they are sitting they can do bitcoin. As long as they can read understand and Internet literate they sre in to work in crypto community market. This will be a good idea for all disabled persons.