I think it is a hyperbolic statement to say they're responsible for ruining people's days.
Let's think this through and ask ourselves a few question.
1. Did they go out there way to do damage?
2. Are they responsible for deciding the infrastructure and how well it can handle with load?
3. Did they force said people to work at GitHub?
4. Is the open source culture and hosting a major part of GitHub business plan?
5. Are they responsible for staffing to ensure people are scheduled to work when work needs some?
Let's think this through and ask ourselves a few question.
1. Did they go out there way to do damage? 2. Are they responsible for deciding the infrastructure and how well it can handle with load? 3. Did they force said people to work at GitHub? 4. Is the open source culture and hosting a major part of GitHub business plan? 5. Are they responsible for staffing to ensure people are scheduled to work when work needs some?