I’ve never worked in technical publishing but I have a few acquaintances who do. Adding chapters on AI is pretty close to industry wide for new writers. Experienced writers with sales figures have a lot more freedom.

The thing is, it’s not about getting chapters published on AI. The publishers are keenly aware that AI is using their content to steal their market and so anything they publish on AI will be obsolete before the final manuscript is published. It’s about getting potentially difficult first time authors to quit before their first third gets approved - that’s when the author is owed their first advance.

It’s a lot easier to slaughter sheep if the most docile select themselves.