[velcii]

>mutations created in the unvax population benefit from resistance to vaccines.

I cannot see how this is correct. Because it should be the mutations created in the vaccinated that will help the virus to survive in similar vaccinated hosts..because first of all, the mutated virus need to survive in the vaccinated host, and become the dominant one in that host and thus giving it a better chance to jump to another host...

So this mutations must be happening in Vaccinated hosts. In unvaccinated as you said, any mutations that gives the virus immune escape capability does not give it an advantage over the other mutations in the same host, simply because there is no vaccine generated antibodies to kill the other mutations, for it to gain dominance.