Not many nostriches seem to use Joplin* for notes. Obsidian and @`Gigi` mentioned in "No Solutions Ep#5) that he used
https://standardnotes.com/
Anywayz, here is my second vibed Joplin Plugin to import Kindle Notes/Highlights. (One kindle book ==> 1 Joplin note).
https://github.com/djinoz/kindle2joplin
Previously I used the excellent
https://clippings.io/ but its outputs were a bit limited (I had a messy pipeline thru google docs and a directory monitoring joplin plugin 🤮 )