A preface: what I use my vault for ‘Why I keep coming back to Obsidian’ is another post for another time, but in short: it works so damn well for what I need. My notes mostly consist of those made from reading non-fiction books and journal articles, typically academic and usually about history (typically ending at around 1750, as this is where my interest dies). This is probably 80% of my vault, with the remaining 20% based on notes from articles I’ve read using Readwise or other sources.
I’ve resisted obsidian. Your essay makes me think I should give it a go?