It depends, in my mind, on why someone is unvaccinated. Why matters.

And while "why" is not always easy to figure out, if someone calls me a "sheep" for getting a vaccine or argues with a minimum-wage worker about a mask policy, I will associate their "why" with "ignorance". If they conspicuously fake a cough near others, I downgrade their "why" to "malice" and feel quite justified in discriminating against them.