I fail to see how opening a Japanese restaurant in South Korea makes someone a traitor:
Korean archer An San, who won three gold medals at the Tokyo Olympics in Japan in 2021, caused a stir with an online post that described a Japanese-themed restaurant as a “traitor to the nation.” The restaurant owner accused the Olympian’s remark of wrongly branding his business as being a pro-Japanese collaborator.
The 23-year-old shared a photo of a signboard saying “international departures” bound to Japan on Instagram Saturday, with a comment that read “How come there are so many traitors to the nation in Korea.”
The photo is no longer available, as it was an Instagram Story that disappeared 24 hours after upload.
The sign in An’s post was part of the entrance to a Japan-themed restaurant at a shopping mall’s food complex in the southwestern city of Gwangju, where a Japanese hot pot pub brand created and operated by Koreans is in business.
An’s post triggered online users to harass the business owner, who ended up uploading a letter of plea to end the controversy.
Korea Times
You can read more at the link, but if someone opens a Chinese restaurant are they traitors too? Or how about a Korean operating a McDonald’s? Are they also traitors?