I don’t think this argument works. The normal world is mediocristan, so the “humans have non-overlapping utility functions” musing is off-topic, right?
That would be true if extremes are the only possible source of value divergence, but they are not. You can see that ordinary people in ordinary situations have diverging values from politics.
That would be true if extremes are the only possible source of value divergence, but they are not. You can see that ordinary people in ordinary situations have diverging values from politics.