Are you not familiar with 2nd and 3rd hand smoke. Try putting an obese person into a stretcher - high rate of back issues amongst paramedics! Drunk drivers, most of us know someone that has lost a friend or family member. The list goes on...One slight difference is that obese people, smokers, drinkers, etc do no pass this to others.
They are not simply doing harm to themselves. They are a continued burden to society in more ways than one. One could argue much more so than the small number of unvaccinated individuals.
We have issues that go far beyond COVID.