So your belief is that being infected with COVID is entirely uncorrelated with having COVID symptoms? Even if there were a minor correlation, then you can infe

So your belief is that being infected with COVID is entirely uncorrelated with having COVID symptoms? Even if there were a minor correlation, then you can infer some information from the trials. I'm not also suggesting that what you describe isn't part of the story, but there is no reason to believe it's a major part of the story. Viral infections lead to symptoms (most of the time). The vaccine is not a magic totem that allows for massive amounts of viral replication while just taking away the symptoms. That isn't how the immune system works.