[PH01]

> Their point was that the "post-truth" framing implies that there was some golden age of rationality where we cared about truth and now we don't; but humans aren't exactly rational on their best days, so in some sense we've always been "post-truth".

Did you read the article?

> Here, “post” is meant to indicate not so much the idea that we are “past” truth in a temporal sense (as in “postwar”) but in the sense that truth has been eclipsed by less important matters like ideology

It does not imply a golden age of rationality at all.