Scroll down to the 2nd question: "What advice do these books offer to a subordinate who wants to give feedback to their manager? What's their reasoning for the advice?"
LLM(and LLM+) afaik, even Perplexity, do not do textual analysis. They do not “know” what is in the book, they will only try to predict how someone else would answer your question based on data in the training set. If there are not many similar questions asked and answered accurately, the results will be poor.