So you say it wasn’t a joke, you wrote the original comment in Japanese because it was your sincere opinion and you wanted the researchers to understand.

Not sure I follow.

If that were the case you should have written in English, obviously. The paper is written in English, some of the authors have Japanese names but we don’t know if they’re native Japanese speakers, the last author (team leader) has a Chinese name, and everyone who does CS research at this level will understand English just fine.