Given mass immunization of people with a vaccine that doesn't confer sterilizing immunity but does appear to mask symptoms, does appear to mask symptoms of superspreaders shedding a ton of virus, apt to be fertile ground for evolution of unnaturally virulent mutations possibly rather harmful to unvaccinated people.

Might this not be a reason to consider the vaccine at some point in the future, especially given that it will be unavailable and unaffordable if the risk comes to pass? Or at least trying to deliberately acquire a natural infection?

This is the most troubling of risks because we have seen it before, in agricultural vaccines, because we understand exactly the mechanisms of what happened, because we have never mass immunized a population with a non-sterilizing vaccine.

The danger here is that the vaccine "works", not that it does not.