A book editor who breaks his promise to a good author may bring a series of consequences. First of all, authors may feel disappointed and angry, because they give their works to editors, hoping to get professional and responsible treatment. The dishonesty of the editor may lead to the author's efforts being wasted, and the work can't be edited and promoted as it should, so it is difficult to get the recognition of readers and the success of the market.

Secondly, the editor's dishonesty may damage the author's reputation. In the publishing industry, an excellent editor is not only a word processor, but also has the vision and professional judgment to distinguish excellent works. If the author's work fails to achieve the expected quality and market effect due to editing reasons, it may be considered as not excellent enough, which will affect his future publishing opportunities and reputation.

In addition, the dishonesty of editors may also have a negative impact on readers. When buying a book, readers usually have certain expectations for the reputation of publishers and editors. If the editor's dishonesty leads to a decline in the quality of publications, readers may lose trust in editors and publishers, reduce their loyalty, and even make more cautious choices when buying books.

To sum up, a book editor who breaks his promise to an excellent author may cause the author's disappointment and anger, damage his reputation and market opportunities, and reduce the trust and loyalty of readers. In this case, both the author and the publisher will bear a significant negative impact.