We shouldn't give the benefit of the doubt. We should define what an acceptable post-infection antibody level is, have people get blood tests, and issue something similar to the CDC vaccination card that attests that the bearer has natural immunity. Those should be accepted as equivalent to a CDC vax card where one is needed.

I do agree that doing this would likely further slow down vaccination rates, even among unvaccinated people who have not yet gotten COVID. Many will just accept the risk of getting the virus, and then some will end up in the hospital, and some will die.

So while I'm uncomfortable with the lack of acceptance around post-infection immunity when appropriate, I do think it's understandable.