I didn't read the story, however I have 7 years experience creating Braille. People equivelate learning Braille roughly to learning Chinese. There are three character sets in Braille, which makes it difficult. I would say Braille literacy is low becaise the lack of being able to be trained. Here in the US we have FAPE, Free [and] Appropriate Public Education under Section 504 under the Rehab Act of (I believe) 1974. This allowed kids with disabilities to go to public schools. However, the schools don't really have funding for a Braille trainer - some districts share one. This leads to either kids going to public school and not learning Braille, or going to a school for the blind. Parents and sometimes the students have to make that decision. Some schools have tiution, which can be a big factor.