This was my initial reaction too. Ideally popular code snippets should be published in a library or tool, which can be versioned and distributed easily... But

This was my initial reaction too. Ideally popular code snippets should be published in a library or tool, which can be versioned and distributed easily... But in reality the overhead of creating and maintaining a library/tool/package can be enormous, for relatively small gains in re-usability (see: https://xkcd.com/1205/ https://xkcd.com/1205/). This snippet library seems more like a step before creating a library, kind of like note taking apps are a step before blog posts or publications. I think you could still use this and be a good programmer.