First, it seems like the Gopher Hole Staff is casting doubt on the premise.
Second, I think this is explainable by evolutionary science. Our minds are programmed to react more strongly to the negative than the positive. When something goes wrong, it gets our brain's attention because there is a problem that needs to be solved. When something goes right, it does not require any additional attention to fix it, so it does not get our mind's attention the same way. This is why the U.S. Army does resiliency training around spending time each day to consciously think about good things that happened ("hunting the good") to counteract the brain's natural focus on the negative.