From the example it looks like with next to no changes at all it would be able to spit out a plethora of
"fake news" articles, even if it's only source was reddit.
There are 7 billion humans on the planet now, we don't have a problem generating bullshit at scale. The same methods you'd use to discern AI generated bullshit are already needed to evaluate current bullshit. If anything I'd argue that this kind of tech becoming common place could get people to start evaluating all news more critically.