It wasn't just the open (amongst themselves) desire to keep Bernie out that was disturbing. The hypocrisy of the racist and homophobic comments from the people who are supposedly their champions is as smelly and toxic as creosote.
In an ideal world we'd have leaks of every group involved in the election: DNC, GOP, Hillary campaign, Bernie campaign, Trump campaign, Trump's tax records, Clinton foundation donor list, etc. However, having a subset, which was selected by some actor with ulterior motives, leaked is IMHO strictly worse than no leaks at all.