Remember at work when Github goes down everyone is just sitting there twiddling their thumbs for hours. As in "yeah my commit is ready just waiting to push it" or "waiting for the issue to be close, then we can test".
It is ironic a bit isn't it. One of Git's major selling points was -- we are tired of one centralized version system, you shouldn't need a single point of failure or be tied to the network in order to develop. And then years later we have one giant global single point of failure across the world. There is some irony there.
(Yeah, yeah, I know I can commit locally. But at some point you'll need to update issues, and publish your changes. This is more a of a generalized point. It would be the same if bitbucket went down and so on. We never it seems have gotten to the mythical peer 2 peer internet of things -- it just doesn't work it seems).