This is not a complicated issue. Assange leaked damaging information about the democrats. But this bastion of truth and justice never leaks anything about the republicans and/or Trump. Zero. Zippo. Do the math.
Should that be illegal? I'm serious, since this is a thread about state actions against Assange. Should it be illegal, in your opinion, to leak information that benefits one political party without giving its little brother a punishment as well so they don't argue all the way home?
It's not a matter of illegality, but that it shows that his true motives do not line up with his claimed motives.