I'm honestly shocked no one has openly laughed themselves silly at the idea of "personalized domains" for a site openly engaging in piracy... because surely that wouldn't be a way to build a stronger case against individual users engaged in piracy, riiiiiight?
Depends. If the database that contains those domains and the account they are linked to is obtained by whatever law enforcement agency gets them, than sure. But the network of torrent piracy detection doesn’t work for this situation so it requires that database to be seized. It is also possible the information is not stored after it is processed. Because copyright trolls can’t get the information like they do with torrents either, they can’t easily send bullshit threatening notices to end users, and it is extremely doubtful that the FBI is going to provide linking information for individual prosecution. I don’t believe there is any example of that, though I’d be interested to hear otherwise.