True post-modernism should also dissolve a staunch moral evaluation framework thus dampening outrage. What we have is some mix of modernism (rejection of classical thought) and fundamentalism (harsh judgement with black and white morality).
You suggest we don't have true post-modernism, because it is not critical enough of the own operating moral framework. I counter that with: post-modernism is essentially only 'tried and tested' anti-modernism, but it doesn't come along as religious outrage like in the old times, but dressed in the form of moral outrage machines, that can be triggered by any form of non-conformist behaviour in any possible framework -- the frameworks have become interchangable, the operational mechanisms work like they always have.
It's not just that the border of fact and fiction has been dissolved. The question is not even considered relevant, because the statement isn't considered to be about truth in the first place.
"Everything can be interpreted in any possible framework" only in the sense that they will interpret your statement in the framework that makes it look the worst. Why will they do so? Because their interpretation of your statement is not about finding truth, but about their assertion of power. That is, these people are operating consistent with their philosophy.
where do you put your pent up hate without being hurtful? you attack the people who are perceived as hurtful first