Hello; Here is the thing now days. A few months ago before the vaccines your comment may have had some merit. Today any adult can have had the vaccine if wanted. Those vaccinated have nothing to fear and also can not spread the virus. Anyone not vaccinated has made a decision and part of a personal choice decision is living with the consequences. For example I am vaccinated so I do not care if anyone wears a mask, not one little bit. They can be walking around with a full blown infection and I will be fine.Think they're all vaccinated... or just putting others at risk?
You also left out another possibility. Some of the not vaccinated may be naturally immune from having had the live virus. That is the way it also works. Get the virus. Survive the disease and have immunity. Not a guess any more, there is plenty of updated understanding. It was the normal outcome from surviving a viral infection for ages of time and last year I figured it would continue to be the case. For some reason there has been a push to deny this , but that fear is proven wrong.
There is a push to have all vaccinated. I have some notions as to why but cannot support such notions.