Why do Asian males born in the US speak like person who has autism?

Hi this question might sound a little offensive but I would like to let you know that I am not trying to offend Asian-American here and just asking this question with pure curiousity. I am Korean from Korea. I noticed that they speak like autistic person like their voice and how they pronounce the words and the tone. I think some people might know what i am talking about. why do a lot of Asian American males born in the US speak like person who has autism? and asia is name of continent not country, why do asian people in america think they have something in common with each other no matter the different countries their parents are from?