It was Mark Twain who said
There is no such thing as a new idea. It is impossible. We simply take a lot of old ideas and put them into a sort of mental kaleidoscope.
I think Twain was wrong.
If it is putting existing ideas together in different ways then AI will be able to do this for us. There will be nothing left for us to contribute.
This is why I believe that there are new ideas and creative input that we as human beings can create and add to the sum of knowledge.
Telling the difference between what is truly creative and what is a combination of old ideas is going to be a key skill going forward.
It is like photography. Everyone can see a landscape and take a picture. Not everyone can recognize a true work of art.