How so? It's certainly been the dream of the "elite intellectual left" that they can counter blunt, misleading propaganda from the right with carefully crafted arguments refuting the disinformation. The problem is that such arguments inherently fall on deaf ears. The intended audience recoils instinctively at carefully crafted intellectual arguments. Parent poster has come to the horrible, but well reasoned, conclusion that the solution instead is dumbed down propaganda of the same quality but with a different message.
It's amusing because the commenter writes that there's a huge amount of the population who can't handle nuance, and then writes them off as never being able to change. Which is a statement without any nuance, just a gross dismissal of a large ill-defined subset of the population.
Though not themselves, because they consider themselves as the elite who must somehow save the world by trickling out Voltaire memes.