By rejecting postmodernism and even the Enlightenment (due to the overwhelming reactionary messaging) most people have unilaterally disarmed themselves, or so I hypothesize. It's hard to talk about these things in any specific, evidence-based way, but here is the idea:

Without the ultimate postmodern truth that there is none, that deep skepticism of power especially and always of oneself, how do people decide what to embrace? Whatever is effectively sold to them, no questions asked. There isn't an instinctive worry about but an almost survival-level embrace of mass messaging - the way is to be safe in the crowd, not to doubt it or to worry about its power in society and its effect on you.

And without believing in the Enlightenment vision of the transformative power of our minds to make a better humanity, expressed especially in art as the pinnacle of human expression and acheivement, art is ruled out and actually threatens your worldview (and that reactionary messaging) of powerlessness and survival.