Most people are sheep, who follow most of what theyr'e told and make up about 70% of the population, about 20% are able to make decisions for themselves about small factors in their lives and can even disagree with the majority!!! Some however are Shephards and they number around 10% of which maybe 1 or 2 actually have an ability not only to think for themselves but to make good decisions for other people.
Because the turing test was set up to equate AI with human intelligence
Most people are stupid. Therefore it's only the peculiarities of human speech and interaction an AI finds difficult to mimic. therefore in fact although 99.9% of people would pass the turing test. That does not make them smarter than a machine