If someone lead you to believe this was true they've been indoctrinating you into a very bad version of Political Correctness. That particular observation should not be construed as racist. It's a neutral fact that some peoples are more complex than others. The Chinese are more socially complex than Americans, for example. So are the Japanese, for that matter. Asians are over-represented in academic excellence. Jews are over-represented among professional musicians and in the film industry. There's a difference between saying a race is categorically bad as a race, and merely saying that race is different than your own race. If you take political correctness too far a person won't be able to assert that Chinese people mostly speak Chinese without having said something criminal.If I picked a race and said that people of that race were more complex than others, I would be a horrible racist.