Big chance of getting false-positive. People will think they're clear and won't distance themselves from vulnerable. While they may be carriers.
In any case, these tests would be used to confirm or rule out SARS-CoV-2 as the cause of someone's symptoms. They wouldn't be used for routine screening of asymptomatic people.
Even the manufacturer/supplier warns that: "Negative results do not preclude SARS-CoV-2 infection and should not be used as the sole basis for patient management decisions. Negative results must be combined with clinical observations, patient history, and epidemiological information."
They also indicate: "The sensitivity is 97.90 %, the specificity is 91.77%."
But when you read the technical document you realize that this was for a subset of patient. The real numbers are 88.7% and 90.6% respectively, and again these are for severe cases.