Covid test, this is what the Coi swab is. Does it really tell us what symptoms we will have?

With the surge in Covid infections caused by the new Omicron 5 variant, the demand for rapid antigen tests is also increasing. The EU has approved over 560 different types: one of these, the Coi swab, should also detect the intensity of the viral load. But experts have many doubts about the fact that it can also be useful in understanding what symptoms we will have