ELC, this is a good post. You explain your position and thoughts well. I think you misrepresent my position somewhat. I'm not looking for caveats. If I was, they would be innumerable, and we could also talk about the vaccines - which brand/type, when they were given, how many were administered, if antibodies developed, etc. Rather, I am trying to be as pragmatic as possible. Either one was vaccinated or not - a very straightforward position without caveats. The problem with using "previous infection" as a surrogate for vaccination is that it is 1) vague and 2) we have very little idea of the protection it provides. We truly do not know if an asymptomatic infection provides 5 days or 5 months of protection, which is the crux of the problem.
In regards to Djokovic, one of two things happened: 1) he lied about being infected on Dec 16, or 2) he was infected on Dec 16 and then did an interview and photoshoot without a mask the next day. Either way, the guy can't be trusted. Australia has taken the pandemic very seriously. In the US, we currently have 875,000 dead from COVID. If the US COVID death rate equaled that of Australia, we would have only 34,000 dead. The difference is obviously massive.