I don’t think it’s fair to flatly posit that since the CDC has been wrong at some point in the past, they can’t ever be trusted. While i understand the concept of don’t blindly follow words regardless of who said it, the sheer amount of research and dedication from an organization such as the CDC should count quite a bit more than the folks who have done none.
I don’t have the means to do such research, and as such i will more heavily weigh the words of the applicable research team than i will the words of someone who has no knowledge on the topic.
I think the question really should be not “have they ever been wrong,” but instead, “do i think they’re wrong on purpose.” A lot of research teams are funded by one side of an argument, which is cause for concern. The CDC is most likely not, and it would be fair to say they could be wrong, but likely not on purpose. Therefore i would say in this instance they are the more qualified experts who are also trying their best to be objective, and therefore, they likely have the more reasonable statement on this topic.