Cognitive Dissonance is why we call them conspericy's

That is not a proper diagnosis or definition of cognitive dissonance.

Furthermore, conspiracy theories like the 9/11 nonsense are littered with logical fallacies.

Really don't get what your trying to say as with your own definition of this will contradict your own thing.

Did you get this information from the DSM?

That is so true, like what they say about "not seeing the forest for all the trees". Being awakened is so much better once you get used to it, especially if your goal is discovering the truth, which most people (at least that I know personally) makes them uncomfortable. Cognitive dissonance is brought on through the avalanche of propaganda acquired in one's lifetime and is purely delusional, flirting with the truth, but not seeking the verifiable and demonstrable truth.

Cognitive dissonance is what many conspiracy nuts suffer from. The actual definition of the term is akin to a type of internal hypocrisy. So like in the OP where he mocks people for mocking people - that's hypocritical, but that internal schema of hypocrisy prevents acknowledgement of that point.

A more common and interesting example is the issue of science and big medicine. Generally the medical industry is spoken of as a kind of boogyman only out for money with no back. This evil is supported by the Corrupt science industry. How do you know? Because it's been scientificially proven. But if science is flawed and corrupt how can it prove anything?

Oh, well I suppose a person could ignore that if not for the issues of most alternative medicine being a corrupt industry relying on fearmongery with no scientific backing that seeks only to fleece people of their money. In other words the things being said of the mainstream more accurately describe the namecallers, but they will never regard it as anything but the truth... Classic Cognitive Dissonance also known as Double-think or BlackWhite or the imperative to think as a child for the common good.