ChatGPT will definitely be used for rote tasks that are currently fulfilled by low-end writers, but realistically could already be automated by a competent programmer. Stuff like generic product descriptions or content farm product reviews. But I don't see it actually replacing flesh-and-blood writers that have a viewpoint anytime soon.
Of course, that might impact the number of available jobs and it's something that need to be taken under control.
But, if talking about writers, while AI won't realistically replace imaginative authors and investigative journalists (at least, certainly not in the short term), it will likely replace (some) copy editors and dollar-per-thousand-words "journalists" that have to fill tabloids and free subway "newspapers". While it might be a financial loss for the people involved, the society will hardly sink due to that. In fact, if I feel optimist, in theory it might reduce costs for publishing houses and newspapers, to invest more into quality (human-made) content.