Why Japanese People Don't Scold Others

Foreigners who live in Japan ask the question "Why don't Japanese people scold"? Nobody scolds children making a racket in trains, elevators or restaurants. The naggy neighborhood lady and the grumpy old man disappeared, and adults that can't scold at schools or companies are increasing. Japan has become a society that is unable to scold compared to the West, where people freely speak up and scold. Why don't people scold? What are the borderlines for when and when not to scold? Are Japanese who don't scold cool?