Being a "conspiracy theorist" really just means being unmoored from the collective narrative of society.
Now some of these people really will seem credulous, and some undoubtedly are, but really they are generally no more credulous than the common people who conform to conventional narrative of events and get angry at those who don't.
While it's true the conventional narrative of events is more likely to be reliable than someone who follows all sorts of exotic explanations for events, that is not because the conventional narrative is necessarily more truthful. Rather it is because the conventional narrative has a huge media/academia complex supporting it. A lone individual, working on his own mental resources, is liable to get many things wrong that the conventional narrative gets right. However, he is also more likely to recognize the fundamental untruths of the conventional narrative.
Of course the desire to conflate "conspiracy theory" with UFOs is by design. It is a way to discredit the conspiratorial view of history.
Someone interested in the Freemasons, for example, is probably a thousand times more likely to read about in in Dan Brown than in Leon de Poncins. The conspiracy is thoroughly engaged in well poisoning.
Before the internet it wasn't easy to find information about the conspiratorial view of history in your typical library.
Since the internet, they've decided to flood us with nonsense about the topic.
And yes, people with alternative views are often prone to making errors that are easy to ridicule. Someone with conventional views might believe something ridiculous, but because other people believe it, it is no longer considered ridiculous. However, it's likely that people who challenge conventional views will make errors, even serious errors, are make him an object of derision. That does not in any way diminish those facts presented which are TRUE.
And the TRUE facts are there, hiding in plain site.