The one party who is most likely to be upset by the recommendation of the author is the book publisher.
In this particular era, people often prefer to watch the movie rather than read the book. Therefore, if even the author says that it is the movie they recommend, the majority of people will listen to their advice.
On one hot summer day, John & Jack, who's Jay's friends, were running like gazelles, as they ran towards the pond, laughing, and getting ready to jump inside.