>>tinus_+(OP)
I agree that using the phrase 'conspiracy theory' in the original Lancet letter was too much. And I'm totally fine with people taking issue with that. And, in hindsight, they really should've waited for more information before forming and strongly expressing such an opinion. They're definitely not free from blame.
But I still think people should be able to change their mind by any amount based on new information. Why would you possibly argue that people should have to stick with ideas they no longer believe in just because they previously argued against them?
So, should they be able to change their mind? Sure. Should they be less dismissive of opposing views? Also yes. There's no contradiction there.