My view of the atmosphere as an interested outsider is that there is a good set of core values around data ownership, but they remain abstract beliefs that are recited, but not turned into working code. Actual code development seems more motivated by the values of the "traditional" tech community: we the experts build tools for the less sophisticated masses.
Example: What would it take for me to really own the data in my PDS? Today's reality for most people is that they choose between two or three PDS operators. They know they can somehow move between them, but figuring out how to do it is hard. Data ownership would also require that users can make personal backups, and restore them with a different PDS operator if necessary. I have tried to find a tutorial for that, but failed so far.
This isn't an issue with @Tom Larkworthyās Lopecode, because I can keep HTML copies of the notebook. But I don't see myself as really owning my BlueSky posts and Semble cards. If EuroSky closes down tomorrow, I will lose all of them.