And don't forget JFK assassins!
The fact of the matter is, this cartoon applies not only to conspiratorialists, but also to anyone who selectively applies data to suport a pet theory, not just young earth creationists, but atheist secularists, anthropogenic global warming-ists, etc.
We all have pet theories or mental models about the world in which causation is often ambiguous. I wonder, though -- is the goal for a good thinker to be right as much as being open to understanding why one might be wrong? I don't think the two have to be mutually exclusive, but an attitude of humility would seem to dictate that the latter rather than the former takes a higher precedence. It would seem, at least, that the two should exist in some tension.