There are other reasons for the site policy, as I've said before. I have yet to be convinced that unmarked satire is somehow "educational" or that this site should be part of that alleged mission.
And with most stories, many people often don't have all the facts down straight. So tossing fake or manipulated 'facts' into the mix only serves to confuse them more. They no longer know what to think. Dumb, I know. But since they're on our side, and could potentially pass the nonsense on to others, I think it's important that they be told the truth before the dopey fake story is spread too much.