Earlier quoted context omitted.
> the vax has rendered herd immunity impossible. This doesn't make any sense; the vaccine confers immunity.
There is a potential paradox here because of original antigenic sin (from the paper name): basically the vaccines only present one antigen whereas in natural infection there are multiple antigens. Once the immune system learns one it generally doesn’t learn more on the next exposure (actual infection). Combine that with the antigen presented by the vaccine (spike protein) being the more frequently mutating antigen an…
Surprising, it looks like this isn't really a problem. The immune system manages to adapt to handle a greater variety of strains, if you give it long time between boosters/exposures, so memory B cells can mature.