We're mad that he illustrated a solid reason not to release the list.

Personally, the current state of rule of law is exactly when vigilantism is the most defensible a stance imo. There's no justice coming from the authorities.

"my client was positing a theoretical situation. According to the president's office, there is no list"

We have to look up case law about theoretical situations being threats, but then again precedence, procedure, and the rule of law means nothing in the US right now.