Why the moderators not only changed the title, but changed to one that is NOT the article title? Usually they do the opposite (and ruins a perfectly good title

Why the moderators not only changed the title, but changed to one that is NOT the article title? Usually they do the opposite (and ruins a perfectly good title), not they did something consistant (ruined a title) while not following the guidelines they claim to follow (of renaming to follow the article title)