This is a common thing happens in different countries where the government mandatory give assistance to there citizens with disability, and the sad truth is that the assistance from government is not enough.
This is the perfect time to introduce bitcoin to persons with disability by doing this they don't need to rely only on government assistance, because they are now started to earn there own money to support their needs.
I think introducing currency to them is good idea but I think it is a big insult for those person with disabilty if the government requested to do bitcoin. If the government introduce it, would you think those disable person are able to do it?