I wonder if they read the content at all, and why they weren't impressed with the evident significant research effort that made use of the TOS production archive?
Cushman placed the blame on his agent in an interview
for sending Pocket Books the "wrong" chapters.
(He claims his agent sent chapters 1-3).
To be fair, these early chapters are by far some of the weakest material in the book, since they offer little in the way of new research and are especially flabby editorially.
Then again, a more thoughtful author might have taken a second look at these pages after Pocket's rejection and significantly revised them. Cushman didn't do that in the first edition (or, as far as the sample pages go, in the revised and expanded edition).