Hard to believe you can't make the simple connection that the unvaccinated person is the man with the gun . He may not be the one that fires the fatal shot but by not allowing his immune system to effectively attack the virus and potentially be less likely to infect others he potentially "shoots" someone else and eventually I catch a bullet down the line. You still need to take all the recommended precautions after being vaccinated as you can still be infected but your chances of survival are greatly enhanced .
There is no vaccine against liquor abuse , food abuse , smoking or women . There are vaccines that have proven to minimize the life threatening effects of Covid . No the vaccines are not perfect and are still being studied but they are buying us some time against a virus that can kill you in a matter of weeks .