Excellent point.

However, people sometimes misuse the phrase "scientific consensus". For example, on the near-death experience, it's often said that "scientific consensus" is that the NDE is a biochemical phenomenon. Wrong. There is no scientific or medical consensus on that issue.

The discrepancy regarding "scientific consensus" is much like that surrounding word "theory" in science, which has a precise meaning different from the colloquial definition. "Theory of Universal Graviation" and "Theory of Evolution" involve a much stronger definition of this word than "conspiracy theory". Evolution isn't "just a theory", in the colloquial sense of "theory"; it's an extremely well-supported probable explanation.