Ha? Of course not, the first non-stop direct flight from Hong Kong to the US opened in the 1980's. Nowadays, direct service is provided daily to Los Angeles, San Francisco, New York, Newark and Chicago. Of course, many people like to stopover at Narita(Tokyo), Kansai(Osaka), Incheon(Seoul) and Taoyuan(Taipei). Why? Of course, it is cheaper, business class to S.F. change at Taipei is only HK$18000 round-trip!
參考: China Airlines, JAL, ANA, KAL and various other airlines