I wish this was the case. The worst guest we ever hosted had 12 amazing reviews. She was awful in every way. She did illegal things, she threatened us and hit us. We had to get the police and Fire Chief involved. She had to be removed. Airbnb was very good and sided with us. Although she still has nothing but stellar reviews on her profile. She went to google review and left a disgusting review that google will not remove.
Another guest was terrible and we made a review that said he would be better suited to a hotel and that was it. He went to google review and said our breakfast was rotten, the sheets were dirty etc etc. Although he had left a wonderful review saying our breakfast was amazing and the place was spotless. He also had over 10 5 star reviews. So it may have not happened to you yet or you aren't aware that people have retaliated on other platforms.