Not what this story says. Even without symptoms a person can still be contagious. Refusing to test without evidence isn’t always science.
If nothing else I can hope we learn one valuable lesson from all this brouhaha. Namely that refusing to do something because it would cost us costs us just too damn much. We really can’t afford to ignore a possibility. We hear of people being refused testing for C19 because they don’t appear to have symptoms, when even the asymptomatic can have the illness, and that the illness can be spread to others. By our false economy we end up spending more than if we had just gone ahead and done the testing.
C19 is going to radically change how science is done. From now on, I should hope, we’ll start looking at mysteries with the idea of actually investigating them instead of saying there just isn’t enough evidence for an investigation. We’ll become more involved in learning what is going on instead of just sloughing off a conundrum just because we think we don’t have the time. And that is going to change things.
We can’t afford ignorance. We especially can’t afford wilful ignorance, and what all we need to learn is something that will change our lives immeasurably. Your opinion of course may differ.