The most prolific by far variant factories are apparently immunocompromised individuals, including those vaccinated - which harbor infection for months and a weak immune system - which lets the virus optimize against weak humans, in the same way the traditional vaccines lets the immune system optimize against a weak virus.

(From memory, don’t have a link handy)

Yeah I mean, we're (presumably) both doing some armchair virology, but I buy that if you're immunocompromised that you can't fight off the virus, and thus the virus succeeds in turning you into a virus factory until you die.

That said, I don't think that's an argument against non-immunocompromised people getting vaccinated. It's like me saying "don't touch the toaster if it were just on, you'll get burned" and you responding "yeah but ovens really burn you." OK well, be careful around both I guess.

It is a great argument that non-immunocompromised people should get vaccinated. If non-immunocompromised people are vaccinated, the probability that immunocompromised people get infected gets smaller, thus causing less variants.