Pointing out that scientific consensus has been wrong is a move creationists and vaccine skeptics use. Isn’t that inconsistent on a site that elsewhere respects scientific consensus?

The warning is fair, and the point being made here is the opposite of the anti-science one. Science corrected itself because it is answerable to evidence, which is exactly why consensus in science is trustworthy in a way consensus in fashion is not. The lesson drawn is that reality is discovered, not voted on, and that is a compliment to science, not an attack. Miasma theory also got the correlation right (filth and disease go together) and the mechanism wrong, which is why some of its remedies worked. A theory can produce good results and still be false, and it was evidence that showed it.