Why on-device only? Currently they are encrypted messages to yourself. They are stored on the relays so that you can continue working on the draft in any other client.
Discussion
Yea, that's exactly why I want on-device only. Drafts should go away if I uninstall the app. I don't want to take them anywhere. Encryption will break someday and I would rather not have every one of my stupid thoughts out there.
Its not a deal breaker. I'll keep drafting in my notes app 🤷♂️