I find it quite difficult to find quality programming books that actually deal with the details and waste no pages explaining the basics that can be found in literally any other book about a specific language/technology.
When it was mentioned that the publisher demanded the book be "dumbed down" it wasn't a surprise to me at all. I also think it's hurting sales of programming/SWE books at large as beginners are more likely to just use up-to-date Internet tutorials than books, but those more experienced who would benefit from in-depth books can only find the dumbed-down ones.
Another bonus feature, would be to remove: breakfast, appetizers, and salads from all cook books, or put them in the back where no one needs to look at them.
Although I have found that cookbooks that don't include the useless fluff to pad the book out are usually much better, like the cookbooks from Milkstreet or Love and Lemons, So I guess it's actually a decent way to just filter out all the crap books.