Ask HN: Why do so many post that YouTube is down?

Title pretty much says it all but to expand a little, YouTube was down recently and I saw at least half a dozen posts to HN along the lines of "YouTube is down" - including one that was on the front page with ~50 points.

Is a service interruption in YouTube (or any service) really that noteworthy? Is there a benefit to posting/discussing on HN when YouTube is down? If YouTube is down people will obviously figure that out when/if they try to access it - everyone else is unaffected by such an outage so we don't gain much by knowing about it.