I guess I’m missing what your main point is other than “question things” and “think about this”.
Would it be nice if everyone were perfectly healthy when covid hit? Yes, but that’s not the situation we are in. The situation we are in is that there is a vaccine that is proven to work and everyone should be encouraged to take it as their first line of defense against the virus. If everyone did that, the effects of the virus would be dramatically reduced and we could all get on with normal life.