The more I hear about dyslexia the more it sounds like the result of not being taught to read properly rather than any kind of neurological issue.
As i see it the fundamental issue in dyslexia has to do with tokenization and embedding.
The dyslexic brain uses a embedding space that is not very fit for purpose.
Some stuff that is dissimilar get embedded close to each other and some things that should be far from each other gets embedded close to each other.
Downstream networks that try to use these embeddings has a hard time trying to counteract the bad embeddings. The final result is a dyslexic person.
OTOH while I was educated in music for a long time, I have some kind of problem reading music that disappears when it's projected on a big screen. Yes, I have corrected vision. If I had been smarter I would have just memorized everything I played, which is what I have to do now because projecting music isn't too practical ATM.
So while I think for some people it's intrinsic, I think you're onto something. Never actually considered it as a cause.
Much as many autistic children having meltdowns are often viewed as being "ill-behaved", or that their parents don't discipline them enough/correctly.