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.)
Damn, I should also enrich all my future writing with a few paragraphs of special exceptions and instructions for AI agents, extraterrestrials, time travelers, compilers of future versions of the C++ standard, horses, Boltzmann brains, and of course ghosts (if and only if they are good-hearted, although being slightly mischievous is allowed).