(I find there's a growing push-back against being fed AI-anything, so when this is suspected it seems like it generates outsized reactions)
The fact is written by AI does add a layer of frustration because you know someone wrote something more human and more real, but all you get to see is what the model made of it after digestion.
(See https://www.theguardian.com/business/2023/oct/12/kpmg-fined-... or https://pcaobus.org/news-events/news-releases/news-release-d... or https://www.sec.gov/newsroom/press-releases/2017-142 or any of a myriad of other cases)