Are "low-risk people" somehow living in an isolated society with only their kind? Or do they also have parents, grandparents, immunocompromised or overweight friends?

The ones who you could argue are at the lowest risk level – those that will have an asymptomatic infection and might not take precautions because they feel fine – are actually presenting the highest risk to every vulnerable person they encounter.

See how it goes to get infected with the virus? It didn't pass any clinical trial.

Pretty good chance you never get infected though (or at least don't get infected for a couple of years when there will be more information). Especially if you live in certain areas.