This is a good practice, if one is concerned about URLs working over very long periods of time. "Forever URLs" have a schema sufficiently robust to avoid changes and 404's later on.
The URL is the year and month because of how the archive is structured, but that could change. The article is not dated but should be--all articles should be. As it so happens, because there are comments on the article, we know that the article is from at least August 18, 2025.
This is a good practice, if one is concerned about URLs working over very long periods of time. "Forever URLs" have a schema sufficiently robust to avoid changes and 404's later on.