I think it’s likely there will be methods to fix this soon, some de-slop algorithms, or is there a deep reason it will always be detectable? Perhaps there are some PhD linguists who have figured out how to quantify the “slop” effect and are writing their thesis on it. Once that is done it will be possible to smooth it away.

The book is definitely LLM assisted authoring yet it also has great content, so not sure we can immediately jump to shaming it entirely for being slop.