There's no doubt that such things exist in quantities > 0, but when you say "X is into Y" and X is a large group of people, shall we be concerned about the percentage of group X who are actually into Y?

And if not, then who are we to criticize members of X for being into things for which they do not have supporting evidence?

Look at the thinking on display in this thread - if we abstract it above the object (topic) level, would we not discover that all people think like conspiracy theorists, if perhaps to a lesser degree? Does anyone care whether all the things they believe to be true are actually true?

And, since we have little if any measurements on the matter, what shall we make of the substantial percentage of mainstream beliefs that members of group X are(!) worse than normal people? It is an artifact of people's imaginations, as are the beliefs of members of group X - and, each group laughs at the stupidity of the other, day after day, year after year - an infinite loop.

Imagine if we programmed computers the way we think about the world, what a mess that would be.