Hmm. If you can't read, you are restricted to looking at pictures. If there is someone to read for you, then you can hear the parts of text they choose to read for you, otherwise you are pretty much restricted to children's picture books. A lot of what happens in the world is simply a mystery to you.
That's happening more and more. I find myself going to web sites looking for manuals and specs, and all they have these days are videos. I don't want videos, I want text, with orders of magnitudes higher information density, searchable and editable.
Dumbing down seems to be across the board. User interfaces, recipes, clothing, handwriting, ability to add and subtract without a cash register or calculator, you name it.
And yes, "coding". Which has taken over for programming. The typical modern "coder" builds houses out of Lego. They may look colorful and shiny, but at the end of the day it's still Lego.
Gone are the days of programmers who actually devised algorithms and discussed them, instead of Googling for something that might be pressured into service. People who would understand what an OS call actually did, instead of treating it as magic. Something as simple as describing what happens behind the scenes when doing an IO request is beyond many newer coders (some of which I work with).
Programmers, they aren't.
We have to start expecting more, and stop rewarding and kowtowing to incompetence.