Technical books don't sell well to begin with. I've written a couple w/ a major publisher, it never paid back the RAM I needed to purchase to run the lab environment.

Publishers are going to demand chasing the hot-new-thing which will most likely be irrelevant by the time the book is on the shelf.

"How to write x86 ASM... with the Copilot Desktop app! - Build your bootloader in 15 seconds!"