Earlier quoted context omitted.
I don't know how saying governemnt officials should speak through a specific medium is 'censorship'. Any organisation will want to control its message, and having your officials use a channel that's 140 characters maximum leads to only being able to talk about issues in the most flimsy of ways. Personally, I think there should be less Twitter and more published in-depth reports.
Why does trump get to use twitter, but the EPA can't?
What the EPA reports may be factual, but the presentation of facts, when they are spoken of, and how often, are all political practices.
Is it important for the EPA to tweet daily "hey guys, you know climate change is caused by humans?". No, we know it is and don't deny it is. What's controversial is: how do we reign in the problem, what are we willing to give up to do so, and how do we coordinate with our allies and competitors ?
The EPA's tweets may not be helpful in getting Chinese support, or encouraging a positive practical debate on how 3rd world nations can both improve their economies with limited technology and still be part of the climate change solution----or even if such a thing is necessary in the short term.