It goes beyond incompetence. De Blasio is a leftist and leftists have flowery rhetoric. More than that, they’re unparalleled liars. They promise everyone utopia and people want to believe in a world where everything’s sweet like candy, so they vote for it, not understanding that it’s impossible.
There are two underlying reasons why people vote this way – they’re either unintelligent and can’t discern the difference between good sense and foolishness and so are easily swayed by these leftist Svengalis, or they never take the time to look at things as they are, so as to perceive what’s appropriate for society’s well-being. It usually takes a severe shock to get a leftist voter to change his mode of thinking.