OK, but please don't do what pg did a year or so ago and dismiss anyone who wrote "delve" as AI writing. I've been using "delve" in speech for 15+ years. It's just a question where and how one learns their English.
I've deleted a paragraph or two to avoid unilaterally taking everything too off topic, but I'll just say that the book is a self-contradictory artifact of hypocrisy that disrespects the reader.