Until a Cartesian Solipsist points out that your senses are inherently fallible, it is impossible to prove that you are not a Boltzmann Brain, and the only thing it is possible to know with certainty is that you exist, in your present moment of experience. You have no valid proof that you didn't run into a pole, let alone that other people are running into them more than you are, nor that the pole even exists.

It's not hard to figure out that the cross-stitcher really cares about annoying religious people