Some considerations regarding natural immunity that you may want to take into account:
Natural immunity, defined as having resulted from a Covid infection, has been shown to be more effective and longer lasting than the immunity provided by vaccination. This is probably due to several factors, including that infection induces humoral (antibodies) and cellular (B and T cells) immunity against more than just the virus's spike.
However, you have to be infected to acquire natural immunity. Because it eventually wanes, maintaining it requires re-infection, which carries its own risks, including cardiovascular. And, as I pointed out previously, there is now evidence the virus replicates in coronary arteries and makes existing atherosclerosis more dangerous. It's possible that very mild infections don't pose such problems, but that's not known yet.
There is also increasing evidence that so-called hybrid immunity, acquired from a combination of infection and vaccination, provides the best protection of all. As well, it is well-accepted that the risks of infection outweigh the risks of vaccination.
For a variety of reasons, the one-size-fits-all approach probably will no longer work for the entire population. Determining the best course of action will require assessment of multiple factors such as demographics, underlying conditions, vaccination and infection history, to name just a few. I suspect we'll hear much more about this, including the use of AI to determine the best strategy on an individual basis, over the next year or two.