If the legal stance is that clean room implementations are not derivative works, even if done using AI, I don’t see how adding a license clause would override that.
You may as well include a clause saying that anyone who reads your license and is inspired to buy an actual ship grants you ownership of that vessel.
Even when a copyrighted codebase is changed piece by piece, there's case law that expressly invalidates the Ship of Theseus License the article links to: https://en.wikipedia.org/wiki/UNIX_System_Laboratories,_Inc.....
You could not care less what the copyright holders/owners of the code wish for that code? If we want to abolish copyright altogether, I'm game for that discussion, but since we have it, IMHO it should work for us ugly people too rather than just the beautiful people.