Similar manner to drink driving, sober people can also hurt others when driving.
This is about where we draw the line. When it comes to drink driving and antivaxxers they both endanger others to an unacceptably high level.
The tongue in cheek point I'm trying to make is that too much of the conversation focuses on relative risk. Relative risk obsession has people not taking more risky, but still incredibly safe (at least in the short term) vaccines here in Australia. Absolute risk (or its delta) tends to be a much more salient number to the victim.
It does help the antivaxx crowd in some circuitous arguments however, as the chance of an unvaccinated person killing a vaccinated person is low if vaccines work!
Also, calling people unvaccinated agency COVID anti-vaxxers, when most are not, is likely to lead to some becoming that.