At present, there are many books such as Ten Keys to Success in the book market  Publishers marketed these books as books that would actually help readers achieve great success  In fact, almost everyone knows that great success is destined to belong to a minority, and people cannot all become one of the minority through books  In this regard, the exaggerated and even false claims made by publishers cannot be considered unethical
Deliberately making a false claim is immoral only if the number of people who are deceived by it exceeds that of those who are not
 To say the least, even if one believes the publisher's false claims, it is not immoral to make such claims as long as reading such books does more good than harm to one's success