No, its not how other people operate. Most people are like you and use notes for exactly what they are used for. This making the front page is wild to me. Just write anything semi-contrarian and you are good to go.
I think the article could easily be rewritten from the perspective of "dumping your excess thoughts / stream of consciousness into note files for later examination or future discarding is good because..."
Because as mentioned, some notes are evolving documents, and others are just scrap files. And I do get a lot of value out of shelving thoughts and ideas for many of the reasons the article describes. It's just written as an unnecessarily grand sweeping generalization.