The most important picture in this discussion in my opinion is this the cumulative incidence rates for both Biontech/Pfizer and Moderna vs Placebo:
I got downvoted in another thread for this opinion, but given the very obvious efficacy BEFORE the second dose (in fact the effect of the second dose is not observable at all in the incidence rate data), I find it ethically very challenging to accept thousands of additional, preventable deaths just to stick to the protocol and because nobody wants to take responsibility for a unprecedented decision.