Obsidian just uses local markdown files, so probably

If your key is exposed, all of your messages will be too, hence why privacy guides doesn’t recommend it

Yes

Well at the very minimum all vpns have your IP, so it’s not a big deal if proton complys with the law, Don’t understand why we expect corporations to break the law

No forward secrecy

That’s the opposite of what I said, it went to GitHub before the play store, so I need to use f Droid to update.