And then it turned out that typing-vs-hand-writing benefits being equal was in fact due to how atrophied my hand-writing skills were.

I've learned that once I got back into fluent hand-writing in a flow-state, the benefits for learning, memorizing, and understanding, were so overwhelmingly superior to keyboard-typing, that I resented the cognitive handicap I had placed upon myself for literal decades.

Now I always carry a tiny spiraled notebook and a Rotring pen. They're as indispensable and practically useful to me as my smartphone.