I did not know 'Jill' was the word Koreans used for American pussy. I prefer it to 'Bobs and Vagene' for sure. Australians have long used 'Sheila' to refer to women generally.
Looking at the Jill of female names in all English speaking countries, Korean men smile.
Today 'Karen' refers to women of a particular age and manner, that become powerful by virtue signalling. Complaining to the manager is the model of their method.
Koreans are reminded of Karen, the girl wearing red shoes from the Andersen fairy tale.