That’s a pretty superficial understanding. Dexamethasone does not CURE this disease. It supports a critically ill patient through a very difficult physiological period. When used at the right time it is important to make sure the patient has it and it appears superior to other meds in the same class
As for prevention, it is a whale of a lot better to prevent infection then have to deal with it. Even if minor. Thus, HCQ probably has a very good role as a preventative, not a treatment. Consider if we prohylaxed high risk elderly — and prevented the disease in the first place. Sounds like a good thing, no?
That is why I am perplexed about the pushback against vaccine. Even if only partially effective, it will reduce severity and transmission.
You’re right, I should not have said “cure” (I think I got carried away by people using the term here). But if it reduces the inflammation that may be all that’s needed.