That gave away the approach of the author right there. Without the electoral college, large cities would effectively disenfranchise huge swaths of the rest of the country. Of course, that is what the socialists would prefer.
It can be debated until hell freezes over, the system will never be changed. Yes, 2/3rds of the states would have to ratify such an amendment and that means that 38 states would want to give away their electorate influence which would never happen in a million years.