The issue is sloppiness, not criminality. Your final sentence is total conjecture. No proof that they could have or did.
I kind of like the campaign slogan "Sloppiness, Not Criminality, for 2016! Keeping Classiified Data On An Unsecured Server And Not Picking Up The Phone At 3 AM".
But it's not really a joke, is it. The choices are narrowed to Clinton and Trump - which is to say, no good choices.