I scribed for DS for a few years too, but he got pretty good with the keyboard (mostly, I shamefacedly admit, due to Minecraft) and again, hasn't wanted my help typing in many years.
Platypus, you said many other things, most of them far more important than this one

...but I just had to say, my dysgraphicky kid learned to type from Minecraft, too! A whole summer spent on Typing Instructor for Kids, another semester spent on typing.com, numerous attempts to get speech-to-text to work, and it was ultimately Minecraft that did it. That, and responding to comments on Scratch.
His solution, and his path to get there, was totally different than his sister's, though.
Which is, of course, the bottom line.