And what will Vitalik testify in this subpoena? What could he reveal that wouldn't already be public? It's like giving a subpoena to a hammer maker to ask the

And what will Vitalik testify in this subpoena? What could he reveal that wouldn't already be public? It's like giving a subpoena to a hammer maker to ask them what happened with hammer x that built thingy Y that they sold long time ago.