What I have a problem with is, these sorts of leaks allow American elections to become a target of nation-state attacks. We shouldn't become used to making electoral decisions based on what the Russian state wants us to know about our politicians-- we need to make those discoveries ourselves, with investigative journalists that have skin in the game.
I understand that the request has nothing to do with the election, and likely would have happened without. Still, when inciting American citizens to break the law, I would hope that one would have some stronger backup than a single embassy's forbearance to carry you through to safety. Conspiracy isn't some newly made up charge, Assange didn't have to encourage Manning to do anything other than release what she had legal access to at the time.