Why would yogis want to run the world?
I believe he said that if yogis could really project their thoughts, it would be a super-power which would enable them to run the world.
The conclusion is that since they do not run the world, they likely do not possess such super-powers.
Assuming they have such superpowers, they also need the desire to run the world. Hence, this way of concluding that they do not possess such powers does not seem right.
I agree that it is possible that they have the mental projection superpower and no desire to run the world. That would make sense, at least from my cursory knowledge of yogis :).
However, their philosophy has a central tenet of minimizing suffering. Wouldn't they use their superpower to eliminate suffering to any extent possible?
And a counter-point to that is, what if they do have the superpower, and they do use it, and that is why there is less suffering in the world than there otherwise would be.
It looks like what we need is a double-blind study.