/u/karmanaut, one of the most prolific moderators, gave some insight into why this is such a big deal: https://www.reddit.com/r/OutOfTheLoop/comments/3bw39q/why_ha...
> We had a number of AMAs scheduled for today that Victoria was supposed to help with, and they are all left absolutely high and dry (hence taking IAMA private to figure out the situation) She was still willing to help them today (before the sub was shut down, of course) even without being paid or required to do so. Just a sign of how much she is committed to what she does.
> The admins didn't realize how much we rely on Victoria. Part of it is proof, of course: we know it's legitimate when she's sitting right there next to the person and can make them provide proof. We've had situations where agents or others have tried to do an AMA as their client, and Victoria shut that [...] down immediately. We can't do that anymore. Part of it is also that Victoria is an essential lifeline of communication. When something goes wrong in an AMA, we can call and get it fixed immediately. Otherwise, we have to resort to desperately try messaging the person via Reddit (and they may not know to check their messages or even to look for these notifications).
In fact, it seems that they actually cut off active IAmAs in progress. https://twitter.com/edfrenkel/status/616653911835807745
If there's anything to be learned here for the larger technology crowd, it's this: There are human single-points-of-failure just like there are in hardware. And if you can't avoid having a SPOF, don't kick it in the face out of nowhere and expect the world to continue chugging along like nothing happened.