Earlier quoted context omitted.
It's built with Electron so not entirely opaque. Car manufacturers don't release their source code either, yet people trust something as important as their life to it daily.
> Car manufacturers don't release their source code either, yet people trust something as important as their life to it daily. I personally find it extremely disturbing. Two bads don't make a good.
The incentives are aligned -> If a specific car model won't be safe, people won't buy it. Also, there is regulation in place.
I think we need exactly the right combo in software too. Obsidian is not open source, but you can gauge what they track in their privacy policy. You can try to confirm it using apps like Little Snitch. Also, all their notes are just plaintext so your data is portable.