Exactly. How many restrictions exist in the world for blind people. But they still agree with it. There are areas where the blind will not feel disadvantaged in any way, and there is nothing to worry about if they cannot use bitcoin. The land will not stop there for them. It's much safer than controlling your voice while someone else can hear and even having an assistant. If bitcoin wallet is called its own bank, then it should remain its own.
It is not every visually impaired individual that is born blind, there are many illnesses that can cause blindness. There are people that have already invested in or is using Bitcoin for financial transaction that might go blind due to sickness. This would be a devastating experience if they don't have the means to access Bitcoin independently. There have to be a means of improving the access and privacy of these disadvantaged people in their quest to use Bitcoin.
Unfortunately there doesn't seem to be that much work done in general for visually impaired people.
I see some tried out but in the end died out. This is probably due to lower number of user base of impaired people whom actually wanted to do or try out bitcoin. Those company must be interested but due to lack of funding and interest its not work out.
Im thinking if Government would found this useful and funded it but since some disagree on crypto might be not possible. Surely some deep pocketed people would see this also as not profitable if ever they tried out to support. Well I knew Elon is a self enthusiast when it comes to innovation maybe somehow or someday he could see this situation for some out visually impaired people abd extend some help or support.
The main reason why the visually challenged are not given attention in the Bitcoin space is because no rich or influential supported of Bitcoin is blind. If Micheal Saylor or Barry Silbert becomes visually impaired, funds would be released for research and development for friendly software or hardware for the blind. It is a general practice for the rich to support issues that affects them.