NW and Grendel are spot on here. What the likes of ESB are forgetting when making these ridiculous analogies is that those refusing to take the vaccine are forcing the vulnerable, who have no choice in the matter, out of society. They are causing exactly the segregation they claim to be against.
There's a large group of CEV people for whom the current advise includes avoiding places where there will be unvaccinated people present. So the reality is whichever route we take we're restricting a group of people and given a choice between forcing restrictions on the vulnerable, who have no choice in the matter, or anti-vaxxers, who are making a choice, I know which group I'd be restricting.