I have seen tons of ambiguity, but not lies. This answer however is not ambiguous. Because of the topics obscurity, a lie here seems like it would serve only a single purpose: to discredit Q, but only in a nonverifiable way. That seems extremely unlikely.
Q himself said misdirection is need, or something along those lines. You haven't found any instances in your research where Q lied to misdirect?
No. Have you?
I have seen tons of ambiguity, but not lies. This answer however is not ambiguous. Because of the topics obscurity, a lie here seems like it would serve only a single purpose: to discredit Q, but only in a nonverifiable way. That seems extremely unlikely.