Asking for evidence that supports a hefty claim was never, at any point in time or space, dishonesty. It's in fact the basis for the scientific method, and the basis for laws against libel and slander.
Throwing personal attacks like yours, however, particularly while intentionally turning a blind eye to the lack of substance or support of a few claims based on a conspiracy theory, speaks volumes about you.
And the comment is quite literally a theory on how someone is conspiring.