The sheep one reminds me of this “conspiracy theory” video:
https://www.youtube.com/watch?v=O7FIiYsVy3U
Many of these are not true conspiracy theories. They are just healthy doubts that require eventual proof. Nothing wrong with that.
That said, there are plenty of conspiracy theories on FR that are just plain wacko and unprovable. Their promoters have no way of actually proving the theory, but that does not matter, apparently.