Compare that to Clapper, Director of National Intelligence stating for the record under oath that national intelligence does not have a surveillance operation targeting Americans in the homeland. That was a lie and one intended for testimony.
Assange here is just saying: Podesta's password is weak. It's hard for him to qualify that it was spelled "p@ssw0rd" rather than "password" during an interview.
The fact that you think saying "password" rather than "p@ssw0rd" disqualifies Assange as a lier goes to the heart of the anti-body reaction that nationalists have about hearing news that doesn't validate pre-existing opinions that they have about the nobility of their nation and its leadership.
The difference between "password" and "p@ssw0rd", while technically true, it is so pedantic it does not apply to the spirit of the conversation.