That's why the blackout needs to be permanent. If even 25% of the users have no clue what's happening and thinks Reddit is crapping out for a couple days they'll shrug their shoulders and use it 48 hours later when it's back up. I don't understand what they think they're protesting by timeboxing it .. Reddit can afford wait it out 48 hours and plan for that.
I guarantee people are going to get an error they can't view the subreddit without reading why they can't.