What I have learned is that if you have a simple explaination, but it's really really stupid, that's still probably what happened. Because people are stupid.
Fair enough, and if all the outgoing traffic to Reddit is innocuous, then there's nothing to hide. Not great if it is some kind of hub of an operation to influence Reddit.
No, it's because that's where they counter the <insert enemy of the state department>'s propaganda with truth and facts.
Same reason Reddit's director of policy comes from The Council on Foreign Relations and worked for Madelin Albright. They certainly wouldn't be using Reddit to influence the perceptions of Americans, the primary users of Reddit.