He knows more than the experts, because he just does.
He knows more about pandemics than scientists and doctors, because it's just common sense.
He knows that hospitals don't need thousands of ventilators for COVID-19 patients because they only need 2 when there aren't any COVID-19 patients.
He knows that there isn't really a pandemic, it's just a vicious plot to make his poll numbers fall.
He knows that if he just pretends to be a "wartime leader" long enough, he will be loved and adored without actually having to do anything.
He knows people you know will die, but since they aren't people he knows, it doesn't matter.