Yeah, note taking apps are like mushrooms these days and it sometimes feels like everyone is doing it.
I think the reason you're seeing all the development here is because how *humans* manage *knowledge at scale* is fundamentally an unsolved problem (this is why people keep building new tools).
My friends give me grief about doing cloud computing for over half a decade to work on a local-first note-taking app. There is some overlap though - it is impossible to keep even a small subset of AWS (which now has over 200+ services) in one's head. The only way to use it effectively is externalizing the relevant details in a way that I, as a human, can retrieve. In many ways, trying to externalize my mental model of AWS was a great proving ground for many of the fundamental ideas around structure used in Dendron