This is a very old post but I just wanted to make a note- this immediately stood out to me as classic Chinese Nationalism, because something Chinese nationalists on social media have been banging away hardcore on for the last few years is that kimchi is totally Chinese and stolen by Koreans, and it's anti-Chinese propaganda that kimchi is known globally as a Korean dish, with a Korean name. Because pickling cabbage is uniquely Chinese and no other culture in East Asia pickled foods until China made contact. Obviously.

I am 95% sure this is what that person was trying to allude to.