This is true. I guess if the market of bitcoin is significantly huge that it can include blind people, then that would be the dream. But as of now, I am clueless if such implementation will happen anytime soon or if anything exists currently.
Maybe they can just let someone to support or help them.
Someone they could trust their life to, though obviously there will be those disadvantages there. I also though of having a voice enabled wallet or an software dedicted to them but this is also business so with a low percentage of blind people using Bitcoin means low sales on that program or software so that will be a no go.