What is said in this article is true, particularly Chinese even those born in the US, they do not sound clearly in their English pronunciations even if they speak fluently. They sounded like pronouncing English words haphazardly as if they are in a hurry. I think it has something to do with the influence of their Chinese native tongue. Most of them even if born in the US have Chinese parents who still speak Chinese at home and they probably communicate using Chinese at home.