And that's what we (should) send kids to school for. Is that what we expect out of 6-year-olds, though? Probably not. We expect elementary kids to play and lea

And that's what we (should) send kids to school for. Is that what we expect out of 6-year-olds, though? Probably not. We expect elementary kids to play and learn basic concepts of things and about the world around them. There is a clear limit to how "deep" a 7-year-old is going to be simply because of maturity and lack of knowledge. We expect more in later schooling years - and that is what your quote refers to. Older children, listening to a lecture. It doesn't mention specifically that this was cursive, either: They were comparing it to typing. And we don't want to force it, either: Later in that same article, it mentions, "typing may help significantly increase exam grades, according to the British Dyslexia Association. And those with physical impairments have long used technology to record their thoughts." Pretty much, writing is a tool that might help you learn assuming you have a neurotypical brain, and even then there are likely other tools you can employ instead.