Unified Field Theory of Modern Liberalism

If you are patient enough, o ye children of the Internet age, to hear to the whole thing, you will see how and why this theory explains the facts. Modern liberals are not stupid, so it cannot be simply that they know not what they do; neither are the evil in their personal lives, so it cannot be that they always prefer evil over good for the sake of evil.
Since they are not stupid and not depraved, what is the answer to the conundrum: why the modern liberal always prefers evil to good, ugly to beautiful, and self-indulgence (to the point of self-destruction) to self-discipline?

Evan Sayet presents his unified theory to explain this oddity.