I understand the elcetoral college, the reason why it exists, and the reasons why some would abolish it. I'm not convinced that Spock does.
As for whether or not the US system has failed...there is a president in place who got fewer votes than his opponent, he was put in place by a Supreme Court stacked with people with political ties to his family and his party.
That president, in his first term, has taken a country who had the goodwill of most of the world behind it and made it into the most despised nation on the planet.
He has started an illegal war, undermined the authority of the United Nations, presided over a military that has committed war crimes, broken US military law, presented false information to the world and the American people, backed out of and/or refused to sign treaties governing weapons. His Vice President is in danger of being indicted in the US and in France on corruption charges.
Has the system failed? Big time. It didn't so much fail as get attacked by a few squalid men who have no understanding of democracy and no comprehension of human decency, but failure is failure and the system did allow those men into power.