I was thinking about this earlier today. When you look at Assange and what he's done and then take a step back and look at cascading consequences, it is horrifying.
Think about it. Without him, we likely wouldn't have a Trump presidency, which in turn wouldn't have boosted nationalism around the world. Without Assange, the US would likely be battling climate change instead of fighting as its champion. Without Assange, the world would likely be hosting serious international debates about how to humanely and intelligently deal with the massive refugee crisis that is just barely starting now and will turn into a flood as areas of the world become inhabitable due to the climate change the US government pretends doesn't exist. If not for Assange and his campaign to help Trump win, the future of the US democracy wouldn't be a fragile question in which much of the world is held hostage. He didn't do any of those things by himself. But, if not for Assange, they likely wouldn't have happened and it is very arguable that Trump would not have been elected.
Wikileaks in 2016 was bad enough in that it served as a tool of one government against another. But, what is to me the key of what it did is the rapid expansion and legitimization of conspiracy theory outlets and the boom of hate and misinformation that they have spouted ever since. No, he didn't do any of it all by himself, but I don't see this all happening if not for Wikileaks tilting the scales in 2016.
Of course, he won't be punished for all that and obviously there's no law anywhere that would cover it. There isn't any way to prove it except for the publication of the emails. But, it doesn't change the cause and effect and I believe that if society survives climate change he will someday be listed as a major catalyst in the disaster we are living through now.