Hurlshot seem to believe we did. That's why I asked for the studies. It was a joke, I know there aren't any.
But to your point, there is always gonna be "percentage of people who will die" with any medical solution for any disease. Virus related or not. That's how medicine works. I'm positive that if one day scientists will come up with the perfect cure for all, there will be 0.01% chance or allergic reaction that will liquify your internal organs. That's how life works.
I'm also sceptical about the "best strategy" since there wasn't an effective vaccine for any other coronavirus before and due to nature of this type of viruses the needed level of vaccination and scepticism around the vaccine it's doubtful we will reach the necessary level of immunity. And also we don't know the long term side effects, so it's also possible that "percentage of people who will die" because of the vaccine.