I suppose it depends on your definition of "acute symptoms" because that is not a distinction made by the paper. The subjects in the study were simply all cases

I suppose it depends on your definition of "acute symptoms" because that is not a distinction made by the paper. The subjects in the study were simply all cases discharged from the hospital with a negative test, not meeting some acute standard you set. only 12% of them were ever admitted to ICU, for instance. You are free to infer what you want from the lack of data about the other cases which the paper did not cover, but that is not how i interact with science. A complete lack of data should never be the basis of your hypothesis.