As a person with a research background, I GET why he "quietly" supports it. We know that Vitamin D, Zinc will help with prevention. But people WILL tout that as a cure and made silly decisions. Go mask-less (but I got my vitamin D!), go to large gatherings mask-less (but I've been on Vitamin D and Zinc for weeks!).
In the science field we have to be careful. Its why the science research, and medical communities all cringed when 45 was touting the Hydrochloriquine as a cure, and they had to clarify the research, and the fact that it wasn't a silver bullet against COVID-19. But too late, people went rogue with it and many people literally died based on what 45 said. And that's irresponsible. People are STILL saying the gov't came back and lied about hydrochloroquine and that while they don't like Trump, he was right about it. People are conflating their COVID-19 positive journey, and saying they got access to the medication, took it and "were cured" when in real time, we have people who were positive, also had symptoms but not hospitalized and took NO Medicine and got better just as fast. And that's real-time...and the studies showed the same...some people died, many got better, and many in the control group got better just as fast....again with no meds....Science and research is funny. Everyone's body is just different. He can TRY and be clear and say, take this or that to help boost immunity and leave it at that. But people will conflate his statement and be reckless at the same time. When medicine and science really should "DO NO HARM." but here we are.
Sigh.