You say I can disable calendar, but follow with instructions to uninstall it. I suspect that Calendar would take away the offline calendars as well when uninstalling, so I dare not do that.
EDIT: Thank you for trying to offer help on this. But actually, I made a troubleshooting post for that part of the discussion. Here, I just wanted to point out that “my data is my data” to me somewhat also implies “my app choices are my app choices”, so I wondered about the decision by the /e/ team to restrict user choices in this area so severely.