Git Notes: git's coolest, most unloved feature - Tyler Cipriani
the short of it is: they're cool for appending notes from automated systems (like ticket or build systems) but not really for having interactive conversations with other developers (at least not yet) - Scott Chacon, GitHub.blog, Aug. 2010 Git notes are almost a secret. They're buried by their own distressing usability.
https://tylercipriani.com/blog/2022/11/19/git-notes-gits-coolest-most-unloved-feature/