It's not half the population at all. Trump was elected by ~26% of registered voters & not everybody is registered to vote. Of those, I figure Hillary's remark about half being deplorables is about right with the other half being susceptible to reason. I figure those percentages probably hold among all the people who didn't vote, who've bought into the "they're just as bad" routine to some degree or another.
This election had absolutely nothing to do with "Holistic Concepts" at all. It had to do with built up spite & resentment, with fear, uncertainty & distrust, with demagoguery atop decades of well financed & formulated right wing mind rot. It had to do with the looting of the middle class with top down class warfare & people who couldn't see through the deceptions that enable it.