> Killing hosts isn't beneficial to the virus survival, quite the opposite in fact. An infection that super aggressively reproduces but due to antibodies fails to gain a foothold beyond the nasopharynx in vaccinated people doing little damage to the host but spreading effectively to both vaccinated individuals who largely have the above experience and unvaccinated who get miserably sick and sometimes drown in their own mucus could be very fit in evolutionary terms in a mostly vaccinated population.

Yes. This is what that Quanta article was all about. Here's the link once more: https://www.quantamagazine.org/how-vaccines-can-drive-pathog...

> The odds are overwhelming that if covid does get worse despite our work in developing increasingly effective therapies the unvaccinated will have it much worse.

Agreed. There's a tragedy of the commons there.