instapaper, readwise and Notion are not perfect (standalone or in conjuction). But they do work pretty well for now. I eagerly await a future where these tools become more robust.
Before Obsidian, I tried 'Kindle 2 Notion'[1] to sync My clippings.txt from Kindle to notion, But Notion is too heavy for my liking and I didn't use it for any other purpose.
Obsidian is built upon self-hosting principles, The obsidian-kindle-plugin referenced in the post is useful for anyone to self-host a read-wise type setup.
[1] https://github.com/paperboi/kindle2notion (Warning: Project is likely abandoned).
ill be looking into obsidian in the future, for now Notion works well for a lot of different things i do
go to readwise -> dashboard -> export -> Notion.
be sure to test its working by doing the flow over a week or so, i remember the initial setup was not seamless, but i just went to look now and its been doing its job well for a while now. Youll want to ensure it exports when you take new notes, so you dont have to manually export. Cheers.