If the DNC leak impacted the election, should the blame be on leaker or on the people responsible. The DNC chair Debbie Wasserman Schultz resigned over the cont

If the DNC leak impacted the election, should the blame be on leaker or on the people responsible. The DNC chair Debbie Wasserman Schultz resigned over the content of the emails, and the DNC issued a formal apology to Bernie Sanders and his supporters over the conduct during the election. It seems a bit like blaming the NBCUniversal for leaking the audio tape of trumps lewd conversation about women, rather than trump. A big question is how influence the three major leaks had on the election, and from an outside perspective it seems insane that the whole US political direction get decided on embarrassing leaks rather than political subjects.