"The man's wife told NBC News she'd watched televised briefings during which President Trump talked about the potential benefits of chloroquine. Even though no drugs are approved to prevent or treat COVID-19, the disease caused by the coronavirus, some early research suggests it may be useful as a therapy."

Were they stupid? Yes. But their stupidity was aided and abetted by someone who has a duty to only put out valid, correct information. At a time of crisis, panic driven actions will occur. A president with any sense would see that and take steps to make sure she/he doesn't blurt out stuff that can trigger such acts.