You can always try do do the Kant thing for questions like these: Would it be good for you if everybody followed your advice? Compared to the chances of getting fucked for writing a bad review, aren't the chances bigger to get fucked by a bad actor in a world where nobody left bad reviews?
It is simple. If the answer to the question: "How would it be if everybody acted like me?" is "It would be worse", this means you are acting in a way that makes society worse for your own advantage.
It is simple. If the answer to the question: "How would it be if everybody acted like me?" is "It would be worse", this means you are acting in a way that makes society worse for your own advantage.