> Even during the pandemic response it was eventually acknowledged that early claims of vaccines preventing infection or even spread weren't supported by the trials.
To the very best of my knowledge this is just misinformation. If you have a citation here, please provide it.
Where are the citations supporting your view that the vaccines were effective at preventing infection?
Is your concern with what the studies tested or whether it was acknowledged?
I can find you links, though it will be directly to the original studies done for the covid vaccines. The studies were well written and clearly called out their methodology. The problem was with how the studies were interpreted and explained to the public, not with the studies themselves.