FWIW I only use Obsidian for note-taking, not metrics or graph views or bike-shedding. Markdown with two-way links and the occasional image, code snippet, or Mermaid diagram. Doesn't need to be more complicated than that!
Adding my voice to the cacophony. I don't use Obsidian but I do use Foam in VS Code. Daily notes and wikilinks is all I need. I've toyed with adding more metadata but it's just not worth the maintenance cost
