Stating facts
The impact of Nero's words was great, but it was more about how he said than anything else. Standing up on trial, facing possible banishment to a cursed zone, brought low by the cuffs restraining his aether, facing the scrutiny of three judges and an entire courtroom, Nero commanded the audience's attention as if he had been doing it all his life.
Everyone other than the judges suddenly became extremely aware of the fact that Nero was standing up on the… well, stands. More importantly, he was standing on an elevated platform so that he could be easily seen. But right now, it did not look like he was a criminal facing his trial. It looked like Nero was a warrior, standing above them, looking down.