@Suiseiseki Thanks for the clarification. I understand the nuance of AGPLv3 and the exception clause in section 7. But isn't it complex to patch a license with a custom exception for end users?
I'll stick with CC0/Public Domain, as previously discussed with the Mypaint and Krita teams. We concluded it's safer for users to have creative assets (brushes, textures, patterns) in CC-0/Public Domain.