It speaks to the quality of character of a large number of citizens in said nation.
********
It does. He does not really reflect the culture. He is too alien and alienated. A weirdo. But his embrace of sanctimonious deceit is very much in accord with the dominant culture.
Why does a nation tolerate a liar as President? Easy, the people whose ancestors founded and ran the country for centuries have abdicated their right to govern. Why did they abdicate their right to govern? Well, they came to believe that eating, drinking, drugging, copulating, evacuating the bowels, snoring and attending the games was better than attending to the details of tiresome old governance.
That is a huge and knowing lack of character among those most required to possess it.