I really wouldn't comment on this unless I read what he stated in context (meaning I would have to read either the chapter or the book, and I have no desire to do either).
I don't like excerpts like this.
These are not actual excerpts. These are alarming summations and evaluations of content with referenced page numbers. It invites the reader to investigate the context to confirm the summations and evaluations.
Dismissing such an endeavor with prejudice tends to be intellectually evasive. You can either accept the author's words at face value, check it out for yourself and make an informed decision, or pretend the exercise has no merit at all without knowledge, but you cannot call it excerpts, and because you have deemed them excerpts, say it has no value because you don't like excerpts.