A day later and I'm still in disbelief about that windsurf prompt. To make a point about AI, I think in the future you could just show them that prompt (maybe have it ready on a laminated card) and ask for a general comment.
Although... depending on how true the true belief is, it might not have the intended effect.
On the other hand, your book gains value by being published in 2021, i.e. before ChatGPT. Is there already a nice term for "this was published before the slop flood gates opened"? There should be.
(I was recently looking for a cookbook, and intentionally avoided books published in the last few years because of this. I figured that the genre is a too easy target for AI slop. But that not even Springer is safe anymore is indeed very disappointing.)