As for the Vilanch blurb...
BK's forthcoming book would obviously be shelved with other Entertainment Industry related books in a bookstore. People browsing the shelves would most likely have some sort of knowledge who Bruce Vilanch is. Even judging from the title of the book, that would also set up certain expectations(?) about who would be blurbing the book. Yes, blurbs are meant to pique interest in a book, but a truly "cold" purchase of a book is truly rare thing.
I guess the question that bk should should ask him/yourself is: Do I want Bruce Vilanch's fan base to read my book?