Both chatbots like ChatGPT and image generators like Midjourney and DALL-E "create" by rearranging bits of what humans have created, much of it ripped off without permission. You can tell the chatbot to write in the style of just about any writer, or Midjourney to copy any artist, and it will.
Real writers and artists aren't exactly happy about this, to put it mildly. There are a number of lawsuits. There will almost certainly be more.
It's true that some people use ChatGPT for first drafts, then tweak it a bit and call it their own. Some students do that for assignments, to cheat, but surveys indicate they know it's cheating.
Editors don't want to see stuff generated by chatbots. I've posted messages about a science fiction magazine that closed off submissions for a while because of the tsunami of garbage from chatbots.
I've also posted about a self-published writer who's used AI, but found if she used it too much her own creativity shut off.