in the end the author states "So, for now: git notes are relegated to obscurity. Forever hamstrung by an obscure and clunky interface and limited adoption—I often forget they’re there.", so after the read, I should forgot about it?
git does need a 'git bug' to track bugs though, as https://github.com/MichaelMure/git-bug does, but I prefer to have it built in git directly if possible.