The first version of Google Docs was written in 2006; CRDTs weren't proposed until 2011, and still seem to be maturing as a technology.
So, I don't think this is a reflection on the merits of CRDTs versus operational transforms as much as it is a reflection on the ecosystem and the history of the codebase.
So, I don't think this is a reflection on the merits of CRDTs versus operational transforms as much as it is a reflection on the ecosystem and the history of the codebase.