There's just so much wrong with your post I don't know where to begin.
Doctors know about the mechanisms and risks and benefits of every drug. No drug is without side effects or risk; even giving oxygen can be harmful in some circumstances. There's a small handful of doctors who insist that ivermectin works, and multiple studies showing that it does not. This is not demonizing it; I would LOVE there to be a drug that saved my patients who died, but this doesn't work. Just like hydroxychloroquine, it was another rumored drug that failed.
Ivermectin is dosed in MICROGRAMS, higher doses can cause blindness, fecal incontinence, and other issues. People are taking gram-doses meant for a 1200lb horse and writing about their side effects on social media. The horror of doctors on hearing this and begging people to stop is NOT demonizing it. Doctors are accused of demonizing smoking, fat people, and the list goes on.
Vaccines normally take years because it takes years to setup and run a clinical trial. Funding and manpower is an issue; signing up volunteers is another; and then you have to wait for enough people in the study to develop the disease in order to get results. A ton of money and manpower was thrown at the Covid issue, there were no shortage of volunteers this time, and the number of cases skyrocketed allowing the researchers to get the needed data in just 6 weeks. There were no corners cut, which is why public health experts are near unanimous on supporting the vaccine study results. The data is pretty self-evident.
Your phony centrism isn't helping because you're talking like an antivaxxer.