@icedquinn
No, not ALL work by AI is copyrightable.. it is only copyrightable if the human "original mental conception" gave "form" to the work.
You can read the statement here:
https://www.federalregister.gov/documents/2023/03/16/2023-05321/copyright-registration-guidance-works-containing-material-generated-by-artificial-intelligence
Here is the relevant quote (its a long document and goes into more detail):
In the case of works containing AI-generated material, the Office will consider whether the AI contributions are the result of “mechanical reproduction” or instead of an author's “own original mental conception, to which [the author] gave visible form.” [24]
The answer will depend on the circumstances, particularly how the AI tool operates and how it was used to create the final work.[25]
This is necessarily a case-by-case inquiry.