Why are American foreigners so afraid of China Kung Fu?

In the United States, China Kung Fu is famous for fighting.

Bruce Lee, Jackie Chan and Donnie Yen all made Americans regard China Wushu as a fighting skill.

Don't think it's just the effect of the movie. In fact, as long as you know martial arts in the United States, you can enjoy it, and it is absolutely meaningless to actually fight martial arts.

Interestingly, Americans now think that all China people can do Kung Fu.