Looking at the big picture, there was forecast poor weather at a busy airport. Many, maybe even most crews took extra fuel but the severity of the conditions meant that approaches and landings were not possible at times and delays grew rapidly beyond the capability of some to absorb.
Quite a few flights diverted to alternates, creating congestion at these airports as well.
After all the aircraft stopped moving, there had been no injuries, no damage and from what we can see, compliance with all the regulations as far as legal fuel policy is concerned. No dead-stick landings off-airport, no flameouts on the taxiway, just a few urgency and/or distress calls on the radio to preempt the above.
The system seems to work!