On September 18th the U.S. Food and Drug Administration held a Vaccines and Related Biological Products Advisory Committee meeting to discuss the Pfizer booster Covid shot. There were 18 members on the FDA Vaccine Expert Panel. They voted 16 : 2 against the third shot/booster for the general public.
Read an excellent summary of the meeting here, which includes call-outs like this one (from an expert): "Vaccine-hesitant are not as dumb as the media would have us believe. They are more familiar with vaccines studies and CV risks for their age groups than the vaccinated."