There is a valid reason for refuting the idea of a conspiracy. There is no evidence. It may be too simple for some, but this is enough for most people. I am certain that there are many conspiracy theories you consider ridiculous, for the very same reason (if you step back) you will find this idea equally ridiculous.
As you may have read your idea about a conspiracy is just as reasonable as mine about the American Broccoli Growers Association - though it may have been refuted for another silly theory. A few of us found the conspiracy theory funny enough to run with it and a few good laughs came out of it.