while Shueisha may share the operator’s identity with its internal team in Japan to aid U.S.-based enforcement, it is legally barred from using that specific data to file infringement actions in foreign courts.

Yeah, knowing a business (especially being Japanese which continually try to apply Japanese law to non-Japanese citizens living outside Japan), that is going to get outright ignored if that person isn’t living in the US. They will just see the personal data of where that person lives in the world and instantly file a lawsuit in that country “because they were suspicious of that country housing the site owner,” likely dropping the US case in the same moment.

Hope the site owners don’t live in Japan. RIP if they do.