[civilized]

Good point, edited to clarify.

Beyond just this study, which doesn't give the whole picture of immunity, I think there is conflicting evidence. Given that vaccine effectiveness seems to be going down in Israel, I think there are legitimate concerns about the robustness of vaccine-based immunity - but the question is always "relative to what?". If it ultimately sets you up similar to or better than natural immunity from an infection (which also wanes, as we get, e.g., colds over and over throughout our lives), that's the best you can hope for.