It feels like the type of infrastructure envy that leads engineers to spin up a k8s cluster to serve a static website. If you're a publishing academic who needs to ingest a lot of material across a variety of subject areas with an eye to producing more, you will need to take a lot of research notes and you will inevitably organize them one way or another. If you are a working software developer, your needs are very different. I think most of the HN-blog-ecosystem-adjacent zettelkastens exist mostly for the fun of playing with information.