The Categorical Imperative is supposed to provide a way for us to evaluate moral actions and to make moral judgments. It is not a command to perform specific actions -- it does not say, follow the 10 commandments, or respect your elders.
A blurb on a book can be any combination of quotes from the work, the author, the publisher, reviewers or fans, a summary of the plot, a biography of the author or simply claims about the importance of the work.
The answer is no. It doesnât work like that. The people who blurb your book tend to be people you know well and who likely you have done favors for in the past. If you donât know him, Bill Gates is not going to blurb your business book, and J.K. Rowling isnât going to rave about your childrenâs book.