I agree that demonization has been a problem and very wrong. However, nobody has prohibited us as individuals from taking vitamins. They have made it more difficult to get NAC or HCQ or non-veterinary Ivermectin and I agree that's a problem. Nonetheless, we have most of these items on hand and we've been actively using them in our household to stay healthy. Hubs and I both infected with COVID after catching it from our hospital-worker son. Our symptoms are pretty mild and far from life threatening. I think it's unfortunate (and I'm being diplomatic) that our public health services and medical community have not been more forthcoming with home-care guidelines that work. I believe they know better but there is an agenda at work and it's not to our benefit.
I also use several of those products, but it would be interesting to know how many people are using those things for Covid mitigation; I’ve never seen a survey on it. I am sure that the generally hostile reaction to self-managed preventative treatment has discouraged many people from doing it.