It does if his living a healthy life depends on hospitals not being 100% full of unvaccinated people being treated for a completely preventable illness.

"prevent", no. Reduce, yes. https://www.nejm.org/doi/full/10.1056/NEJMoa2116597

That’s just not true. This is some weird misunderstanding. Or a failure of people to think in anything but black and white?

Vaccines reduce transmission. They do not eliminate transmission completely.