I think that we keep forgetting that the number of people using bitcoin is still extremely small...
Bitcoin wallets are not even properly newbie-friendly. Making wallets and services friendly with blind people would be a step even farther. But I somehow tend to believe that it's not financially viable for somebody to invest that much time into developing such wallets (although really good newbie-friendly wallets is something I also think that we should have already and - arguably - we don't). And hobbyists will make the programs in the way they can use it (i.e. rather advanced and most probably not for blind people).
So I guess that more time has to pass (and with it adoption grow greatly) until we'll see the software and services you'd like.