Question

Hi, I’m currently reading the book Truth and Unstable.
The chapter dealing with pluralism seems to reject postmodern pluralism using exactly the same tools that it is trying so forcefully to reject.
The claim (as I understand it) is that postmodern thought is not philosophy but a culture that was created and ingrained in us through education and subconscious content from a young age.
Isn’t that exactly the claim against the “constructs” discussed in postmodernist discourse?
 
Simply put: the postmodernists claim that what people say is not absolute truth, but only the form in which they were constructed. But that’s nonsense—they say that only because that is the form in which they were constructed.