Suppose you find yourself listening to a post-modernist, or struggling to read something by a post-modernist. How closely should you engage with this message? How should you react to it?
You should say “This is nothing other than an attempt by the speaker or author to exercise power over me.”
Why should you say that? Because according to post-modernist principles, there is nothing else that any kind of statement could be. There is no such thing as an objective fact, according to them, so it cannot be an attempt to persuade you of the truth of a fact. Rational thinking is, according to them, nothing other than the attempt of a particular privileged group to maintain hegemony, because everything is about the attempt of individuals to obtain or maintain power. So if there is something that appears to be a rational argument, it cannot be anything other than a masquerade concealing a naked attempt to exert power.
In short, you should regard everything said or written in the post-modernist mode as less meaningful than the cry of a hungry baby, for the baby embodies the birth of meaningful communication and post-modernism embodies its death.