You may be confusing note-taking with rewriting notes as part of study. Most wouldn't use note-taking for both of those activities, whether in or out of college

You may be confusing note-taking with rewriting notes as part of study. Most wouldn't use note-taking for both of those activities, whether in or out of college, and what the article author is doing is more like note rewriting, except he's using a system of tags and links to do a sort of emergent restatement of ideas. The scene from The Office was ironic. ;)