Does Truth Matter Anymore?

The age in which we live has been characterised by the rise in "wokeness", that is to say, the notion that things are not as they seem, that which has been held to in the past should be questioned, even when what is observable seems as evident as the nose on one's face. But, is this anything new?
Back when I was a student in the late 1990s, I was introduced to the concept of post-modernism and post-modernist thinking. It found its origins in the latter half of the 20th century and, for anyone wondering what it meant –
Post-modernism is a mode of discourse that is characterised by philosophical scepticism towards the grand narratives offered by modernism; that rejects epistemological certainty and the stability of meaning; and rejects the emphasis on ideology as the means of maintaining political power. Post-modernism dismisses claims that facts are objective as naïve realism, given the conditional nature of knowledge. The investigative perspective of post-modernism is characterised by self reference, epistemological relativism, and moral relativism, pluralism, irony, and eclecticism; and dismisses the universal validity of the principles of binary opposition, the stability of identity, hierarchy, and categorisation.
To put it in simple terms, post-modernism believes that there is no right or wrong, there is only opinion. I believe that this is the origin of what today is known as "wokeness" and it is what they base their entire belief systems on.
So how does this affect what we know as "truth"? Well, it would purport that truth is whatever you believe. If you believe that something holds a place in your reality, it then goes without saying that, to you, it is true. Let's assume for a second that you are high as a kite on LSD. According to a "woke" perspective, any experience that you have during this time would constitute absolute