I think there is a legit question to be answered here. Try to make it black and white without any gray in between isn’t helpful.
Generally speaking, people shouldn’t have to PROVE anything in order to enter a business. I hand you my money, you hand me your product or conduct your service. But there should also be exceptions to that rule. If you have a sincere religious aversion to something I am asking for, that is cause for an exception. You whip your johnson out in a female locker room and make my female customers uncomfortable (to say the least), you are not welcome to use my facilities if you insist you belong in female spaces regardless of if you say you’re a woman or not [this is an easy one, right?]. So the question we have to ask is, does vaccination status create a situation in which business owners have a legitimate gripe against serving non-vaccinated folks?
I think the answer is hard to get to. If I am a vaccinated business owner, I know my chances of getting really sick with COVID are extremely unlikely. But I know I can still get it and spread it. I also know that a person that isn’t vaccinated is more likely to have COVID than an unvaccinated person. But not all unvaccinated people have COVID. I just know odds. So the question then becomes - are “odds” a legitimate reason to exclude people from your goods or services?
Up until we had the vaccine, it was perfectly legitimate for a business to keep out a person with a high temperature. Not many people argued with that, even though there were some feverish people without COVID and lots of non-feverish people with COVID. It was essentially agreed upon that if you had a fever, you were so likely to have COVID at that moment that you could be barred from every indoor public place and public accomodation willing to spend the time to check your temperature. But they were more than willing to let you in when your fever went away.
That was a temporary barment that was lifted as soon as your body returned to a normal temperature. There was nothing you had to do in order to gain entry. It was completely our of your control. So since people didn’t feel they did anything to get barred and weren’t forced to do anything to eventually have the barment lifted, they didn’t feel like their rights were being affected (which, funnily enough, is the opposite of how our current protected classes setup works).
But, a business employing the “vaccine passport” model is quite different. They are requiring you to do something to gain entry and they aren’t considering your likelihood of having COVID at that moment you request entry. They are considering your likelihood of catching COVID at all. Considering that many people refusing the vaccine are doing so specifically because they already had COVID in the past, the logic of a vaccine passport begins to wane. An unvaccinated person that had COVID in the middle of August is probably less likely to spread COVID inside today than a vaccinated person that has never had it. So without the information behind why someone is unvaccinated and whether or not they have already had COVID, the blanket decision to exclude people that have been unvaccinated seems akin to using a steamroller when a hammer will do fine.
But I am also sympathetic to businesses doing what is best for their bottom line. Some businesses seem to think that keeping out unvaccinated people will make vaccinated people more comfortable and more likely to come in. This isn’t a moral stance to them. They have been killed (monetarily) by COVID, in some states worse than others, and they are willing to do anything to get people back in the door. The problem there is that it is just a guess. There are clearly lots of vaccinated people that don’t mind sharing spaces with unvaccinated folks. And there are clearly lots of vaccinated people that just want to go out and live their lives. The question is, are there more vaccinated folks that won’t come in unless they know they are surrounded by only vaccinated folks, or are there more unvaccinated folks that don’t care about being around people in general. The answer to that changes based on geography, the type of business, and probably a bunch of other factors, so there is no real one-size-fits-all rule that will make sense to all businesses everywhere.
In the end, I like to look at the overall effect of the policy. Vaccine passports are not outlawed where I live. So far, I am aware of only one business that I patronize that has implemented it. It’s a small indoor concert venue. For them, I think it is not just a bottom line decision. I think there is some ideology tied into it too. Indoor concerts aren’t a need. Outdoor concerts are also a thing. Prior to them announcing the policy, I was planning on going to a show there (I have already attended 1 indoor show this year). Once they announced the policy, I decided I wasn’t going to patronize them until they drop their vaccine passport requirement. I was going to write an email explaining that, but I am giving them the benefit of the doubt right now. If it persists longer than I think makes sense, I will somehow decide to let them know that I would be coming, but I am not because of their policy, even though I am vaccinated. So big picture - they are a concert venue where social distancing would be impossible and masking would be overly arduous - so the policy right now makes decent sense and isn’t having a deleterious effect on the day to day life of folks. So personally, I don’t think they should be barred from implementing a vaccine passport model. However, If they were the only grocery store in town and they were implementing that policy, that would have a huge overall effect and wouldn’t make sense because social distancing inside is possible and masking for the amount of time you are in the store isn’t that bad. I would be against allowing many grocery stores to enforce a vaccine passport policy. It’s the places in the middle that are harder to adjudicate. Restaurants and private colleges, for example. I don’t think there is an easy answer for those places.