I think we have already been living in a post-truth world ever since laws started to erode any journalistic accountability for news and media corporations. At least it's like that in Australia, just watch any recent friendlyjordies (yt) investigation to understand how the laws protect even the most incredibly bias and un-factual news stories.

Sure, more people might be tricked with the prevalence of AI but those people usually can't read between the lines anyway.