I hope you realize the fundamental issue with this statement about “post fact” - does it not depend on people are analyzing the same things?
One really has to know the underlying basis of a fact in order to declare it factual to someone else, as your fact may not apply to them because they analyze different things. This is particularly true when people claim facts about social and economic issues.
I believe too many things presented today are not facts, but interpretations of actual facts written in such way to present a pre-ordained worldview of the author and his known audience.