Saying that a theory is wrong is different from saying it's a conspiracy theory. In the second case, you’re smearing proponents of the theory. That’s a form of

Saying that a theory is wrong is different from saying it's a conspiracy theory. In the second case, you’re smearing proponents of the theory. That’s a form of censorship. Doing it for a theory that was not in any way proven wrong (then or now) is professional misconduct.