Remember deep fakes? We had been dealing with doctored still images a la Photoshop for years already. Everyone knew images could be doctored and so we started to trust them less as a reliable source of information when it mattered. We'll do the same with video (and already did to an extent since manipulation through editing was already possible).
What is the worst that can possibly happen as a result of AI being able to generate text that is indistinguishable from something a human wrote? Or that a "chat bot" can answer questions with more relevance and detail (correct or made up) ?
That we will have more garbage information out there?
I think humans already did a great job of making that a problem already. AI has the ability to produce more of it, but it's just pouring gasoline on a fire that was already blazing and that we already had to figure out how to deal with.
Moral of the story: when it matters, check the source. Why does AI suddenly make this "new" ?
For what it's worth, I'm not riding the hype train. I am neither excited about ChatGPT nor scared of it. It's just another day, just another tool, just another marketing hype train. My personal opinion on the matter is just "meh."