If the original author of the leaked emails had used encryption, none of this would matter. The fact that they chose not to encrypt the contents of the email, instead stupidly thinking that email was secure by nature (it most definitely is NOT), is the real issue here.
If I hear you shouting your social security number at the top of your voice to your friend across the room, its not my responsibility that your information is no longer secure or protected. Its yours, and yours alone.
The technological incompetence of the authors of DNC emails is the issue here, people. Do you really want someone running the country who can't even fathom the most basic, basic aspects of the technology that runs the world?