Comment by dan-robertson

Ultimately I think the answer is “it depends” but the issue is that there is usually document structure which is mot visible in the data structure itself. For example imagine getting 100 people to fill out a row on a spreadsheet about their preferences for some things or their availability on certain dates. If each person simultaneously tries to fill in the third row of the spreadsheet (after the headings and the author), then a spreadsheet CRDT probably would suck at merging the edits. But if you had a CRDT for the underlying structure of this specific document you could probably merge the changes (eg sort the set of rows alphabetically by name and do something else if multiple documents have rows keyed by the same name).