I write intermediate commit messages as notes to self. You don't always work continuously on the same PR. The commit messages are a useful context refresher.

Why advocate against this anyway? If no one reads them, it harms no one. Just like personal blogs. However, the writing of the blog is the useful act, not the reading.

Ironic that you are accusing TFA article of being an expert novice. I don't disagree your take on him / the article, but you are committing the same sin.