No, Omicron making it worse is a fact that I already ceded.. but we have data that shows low (but still around 30%, not 10%) efficacy against infection with Omicron.. and still high efficacy (70%) against hospitalization and death.

But you say "has proven less than 10% effective" ... because you are making stuff up.

Further, it may be a mistake to assume South Africa predicts exactly what will happen here (30% fully vaccinated, nearly 0 boosted, 20% HIV incidence, vs. 60% fully vaccinated, 25% boosted, 0.3% HIV incidence).