> But I was understanding that we were talking about something that may need to be referenced but can eventually be GCed (e.g. tombstones-style)

Yeah my point is that this is only a limitation of certain types of CRDTs. Automerge and Yjs both suffer from this.

However, it’s not a requirement for anything built on egwalker. Or generally any CRDTs in the pure operation log style. Egwalker (and by extension, loro and diamond types) can generate and broadcast edits synchronously. Even without any history loaded.