At least he's honest about it, the vast majority of AI people would just submit it as their own work having never read it at all.
This is what I was taught: work should be attributed correctly. If I would not mention the tools it would seem if the book was written entirely by me which is not the case.
This is a book which was started by me, I did use the AI tools I normally use in my daily routine on my personal projects. They are secondary in this post though.
I posted in my personal capacity and my employer is not aware or connected to this - the book is entirely mine.
It is not AI slop. A large part of its content was written originally by me 10 years ago.
But if it has offended anyone and I should not had posted the work which I have not fully yet reviewed myself, then sorry