I think there's a misunderstanding here.

People often associate CRDTs with IDs and tombstones, while associating OTs with positions.

This is incorrect. What makes them different is that CRDTs must work in P2P environments *by definition*. That's all.

Other true statements:

- All CRDTs are OTs, but not all OTs are CRDTs.

- If an OT supports P2P, then it's also a CRDT.

- If it doesn't support P2P, it's not a CRDT.

- A CRDT can have no IDs and be operation-based.

- An OT can have no positions and be ID-based.

In fact, I just released an ID-based OT framework yesterday: https://docnode.dev.

I hope that clarifies things a bit more!