notapilot - they certainly should and most likely will debrief the response and make recommendations like emergency response agencies always do. Airport firefighting equipment is designed for offroad. But I guess we don't know the exact circumstances and terrain they avoided (e.g. drainage and other infrastructure).
You know one of the biggest issues facing airport response crews is the relative infrequency of real incidents. You can drill all you want but there is no substitution for real world experience. It has been documented in peer reviewed research that stress levels for responders that respond infrequently are much higher than for frequent responders. Airport responders are some of the least experienced in their field. It's not their fault.
It's actually very rare for a response to run perfectly. It's humans dealing with novel situations under high stress.