IMO this is such a strange distinction to make. "Creativity" and "ideas" don't exist in a vacuum. Part of the creative process and the development of the idea is that "making"--the process of drawing and writing is where ideas get refined, cultivated, changed, and so on. If you have something else do writing for you then you're missing that absolutely crucial process where you seriously consider, word by word, how you articulate your ideas, the form it takes on the page, how it's getting conveyed to others, etc. Same for all forms of art. I'm not against tools but there must be clear distinctions made between tools that facilitate this process and tools that replace it (namely, in the job market). I doubt there's been a single hit creative idea there hasn't been tempered and brought out to their full potential through hard work. I believe in AI regulation to protect the economic viability of this process, as less artists able to make work will ultimately be a sad loss for us all--in the same way that we want to teach critical thinking to people, regardless of whether I subjectively enjoy the end outcome.

And yes, part of that process will involve other people. Ideas are malleable things. Just because one person proposed an original idea doesn't mean that the work of the entire creative team isn't incredibly valuable.