This is simply the result of arguing with a group instead of an individual. Once refuted, the person you were speaking to does not change their mind, at least n

This is simply the result of arguing with a group instead of an individual. Once refuted, the person you were speaking to does not change their mind, at least not publicly. They fade into the crowd like Homer into that hedge and another person steps up to "whatabout" something new. The group will switch around its voting to ensure this. A group cannot admit it was wrong. This functionally happens only by membership in that group dwindling, likely as it gets more argumentative.