Dear Ready,
China had about forty thousand confirmed cases, before the Zelenko protocol was introduced. This number is regarded to mean hospitalizations. (Asymptomatic spread was mostly discovered by South Korea.) Over 90% of these patients survived. That means thrty six thousand plus patients were ill and recovered without HCQ. And if I recall correctly, the first large study of HCQ was done in China. And they found it was no better than standard care.
Millions of patients have survived Coronavirus worldwide, without HCQ. The mere fact that people survived it with HCQ, could only prove that HCQ is not fatal for Coronavirus patients.