it is not the first day that Korean and Chinese fighting over their history so I am not worried about the Korean side on the hairpin controversy and it will die down just like other controversy like kimchi and hanbok.
However, the problem is not the hairpin controversy, but whether Wonyoung is Chinese have became a topic lately again in Korea.
Wonyoung being Chinese had been an issue since Starship released her name as Chang Yuan-Ying to MNET at PD48. Why do you think it is anything new? Unless you can erase her family (her mom's name is Wang, her dad owns a Chinese restaurant and her grandfather was the Secretary of the Korean Overseas Chinese Association) it'll always be an issue with Koreans.