the problem with being vaxxed and unvaxxed is that everyone's immune system differs with and without, for some people it's better if they get it, for others, they won't need it. covid is like a tornado, one person could be fine, and the next person could get severely messed up or in most cases dead.
like in my state, we've had a total of 733,433 cases, and 12,531 have passed away. While those numbers are small compared to the infection rate, that's still a huge amount of people, and i guarantee a lot of the ones that didn't die could now have a permanent problem of some sort