The specific criticism, that even the original author accepted later, was, that the growth of the infections in Israel during the study where focused in cities

The specific criticism, that even the original author accepted later, was, that the growth of the infections in Israel during the study where focused in cities with lower vaccination rates compared to the whole of Israel. I.e. the effectiveness of the vaccine was underestimated in the study. Additionally, you have to consider that Israel got the vaccine very early, i.e. more people had their shots a longer time ago. Meanwhile, Biontech (the developer of the Pfizer vaccine) applied in Europe for approval to administer third shots 6 to 8 month after the second shot. It remains to be seen, whether the higher concentrated Moderna shots will need a third one a bit later. One has to be very careful to properly separate a lot of different aspects for drawing general conclusions, regarding this pandemic.