I honestly have a lot of respect for the medical profession. They perform near miracles on a daily basis. But to say they can be hard headed on occasion is an understatement. When an Australian doctor figured out that antibiotics cured ulcers in almost 100% of his patients, and he published a paper to that effect in 1985, it took TEN YEARS for the medical community to accept it. What is surprising given the low cost and safety of the treatment, and the fact that virtually 100% of patients were being cured, is that very few doctors just tried it. Thousands, maybe hundreds of thousands, of patients suffered and some died while this treatment was being proven in RCT's. The incentives for doctors to try unproven treatments is very low, and I can understand that. HCQ is particularly tough, given that most patients will recover without it, and some may die with it. It's very hard to tease out the real signal from all the noise.
However, it makes sense to me as a patient (without heart issues) to try HCQ plus zinc as an outpatient when covid is first suspected. Very low risk, and possible to probable benefit, and there is nothing else anyway. If I have to play Russian roulette, I'd like as few bullets in the chamber as possible. From a doctor's perspective prescribing it, it's all risk and no benefit. You could get sued if the patient has a heart problem, and there is no upside to them recovering without hospitalization, which they will likely do anyway.