You can't separate the tools from the craft. Practical disciplines aren't just about doing things but also doing them well. The title of the piece was "take better notes, by hand" so you know, the tools I think are relevent. And come to mention it, the "by hand" part needs some attention too, because one complaint I often hear is that typing is less fatiguing than writing longhand. Ergonomics plays a big role here -- you're not going to write anything at all if you get cramped up. So yeah, I think that the tools are wholly relevent to the idea of taking better notes.

Generally people don't write with diarrhea for a good reason. I think anyone suggesting positive results would be suspect.