Well, it's certainly a major wake-up call.
The proliferation of IT-based "solutions" in passenger air-transport recently has been remarkable: fully web-based reservations; on-line check-in; boarding cards via hand-held devices etc etc etc.
These days all one sees before Security at airports is a spotty 16-year old handling checked baggage - typically someone who wouldn't recognize a Manual System if it swam up and bit him.
When all said and done, Delta's back-up and disaster recovery procedures clearly fell far short. No real excuse for that.
[Presumably anyone dying in SE States that day got an extra day on earth. "It doesn't matter if you go to Heaven or Hell, you still have to go via Atlanta!"]