> Given this data the most effective strategy is to just vaccinate everyone without what is effectively a pointless distinction
The data clearly shows that protection from natural infection is at least as substantial as from vaccination, and that ~half (if not more) of the US population has had it. This fairly obviously impacts the most effective strategy. Mandating vaccines (and now boosters) in young, healthy people who were already at small risk, including those who have already had the virus, is so absurd that I can't even characterize it as science. It is simply punitive behavior.
Most countries recognize prior infection. We're in a small, small club of scientifically illiterate nations here, and it's rather embarrassing.
> It will be once the proportion of unvaccinated people in hospitals starts to resemble the proportion in the general population.
If the total number of hospitalizations is a manageable number, the percentage that are vaccinated is irrelevant. It's a metric of punishment, not a realistic policy goal. I have no idea what the future will bring with regard to the ratio of unvaccinated hospitalizations, but I know that hospitalizations in general will fall as the population achieves broad immunity -- and natural infection certainly counts toward that goal.