I thought the same thing about the Trump trial, but they legitimately turned over rocks and found the most oblivious Americans living under them. There are evidently tons of people out there living in their own little bubble, completely untethered from the news media or even just casual conversations with strangers and probably have no idea who Luigi is right now. The news might not be able to reach them, but a jury summons from the state can, and the prosecution is going to hunt for these individuals specifically.