This is a solid point, but he can still have his voice arrested about certain things by the government. That could end up a legal hurdle.

Also, from a strategic standpoint, revealing more about that stuff isn't what he wants to do -- not the terrorist stuff specifically, but DMs and private information about users.

If he's a good guy, imagine how much more he could catch by not divulging that sort of information, and if he's a double agent imagine the people he could catch by making them feel safe.

If he's bad, we'll probably end up seeing that as we lead up to the election anyway.