Their data is of higher quality than upstream sources like the Johns Hopkins CSSE set. Notably, it's in long-form (one record per day per area) instead of wide

Their data is of higher quality than upstream sources like the Johns Hopkins CSSE set. Notably, it's in long-form (one record per day per area) instead of wide-form and the schema is consistent. This takes some know-how and a bunch of ETL effort. There is significant value in their transformation of upstream data.