No, it is not accurate or fair to make a generalization that Japanese people, as a whole, are antisocial. Antisocial behavior and personality disorders are individual traits that can occur in any population or culture, but they do not define an entire ethnic or national group.
Japanese culture, like any other, is diverse and multifaceted. Social behavior in Japan, as in any country, is influenced by various factors, including cultural norms, upbringing, socialization, and personal experiences. While some individuals in Japan or any other country may exhibit antisocial traits or behaviors, it would be incorrect and unjust to apply such characteristics to an entire ethnic or national group.
It's essential to avoid stereotypes and recognize the diversity and uniqueness of individuals within any culture. People's behaviors and personalities are shaped by a multitude of factors, and making sweeping generalizations about an entire group based on the actions of a few individuals is not accurate or helpful. Instead, it is better to focus on understanding individuals as unique persons, regardless of their cultural background.